Your taskFill in the gap in each sentence with the correct word or phrase.untidyunimportantimpossibleincorrectincompleteinformalinactiveinfrequentdisappeardislikedishonestdistrustdiscouragedisobeydiscomfort0 / 15 answeredYour score0 / 150%Keep practising! Focus on the explanations below.1His bedroom is always . There are clothes and books all over the floor. (TIDY)Correct answer: untidy▸ Why?Add un- to "tidy" to form "untidy" — not neat or organised. Un- is used here because "tidy" is a common everyday adjective (not a Latinate word).2Don't worry about small spelling mistakes. They are . (IMPORTANT)Correct answer: unimportant▸ Why?Add un- to "important" to form "unimportant" — not important or significant. Un- is used with "important" (not in-), despite "important" being a Latinate word.3Climbing that mountain in one day is . It normally takes three days. (POSSIBLE)Correct answer: impossible▸ Why?Add im- (not in-) before "possible" to form "impossible". Use im- before words beginning with p, b, or m: impossible, imbalance, immature.4Three of her answers were . She scored seven out of ten. (CORRECT)Correct answer: incorrect▸ Why?Add in- to "correct" to form "incorrect" — wrong or not accurate. In- is used before most consonants (other than p, b, m) when negating Latinate adjectives.5The application form was . She had not filled in all the required boxes. (COMPLETE)Correct answer: incomplete▸ Why?Add in- to "complete" to form "incomplete" — not finished or missing some parts.6The party was very . Everyone wore jeans and trainers. (FORMAL)Correct answer: informal▸ Why?Add in- to "formal" to form "informal" — relaxed and casual, not following strict rules. In- before f is standard: informal, independent, infrequent.7He used to play sport every day, but now he is very . He sits at a desk all day. (ACTIVE)Correct answer: inactive▸ Why?Add in- to "active" to form "inactive" — not active; doing little physical movement. In- before a vowel is common: inactive, indirect, inaccurate.8Her visits to her grandmother are . She only manages to go twice a year. (FREQUENT)Correct answer: infrequent▸ Why?Add in- to "frequent" to form "infrequent" — not happening often; rare.9He left the room suddenly and seemed to . Nobody saw where he went. (APPEAR)Correct answer: disappear▸ Why?Add dis- to "appear" to form "disappear" — to stop being visible or to go away. Dis- before a verb often reverses the action: appear → disappear, connect → disconnect.10I spicy food. It always makes my mouth burn. (LIKE)Correct answer: dislike▸ Why?Add dis- to "like" to form "dislike" — to not like something. Dis- negates the verb here. Compare: like (positive feeling) → dislike (negative feeling).11He told people he was a doctor, but it was not true. He was being . (HONEST)Correct answer: dishonest▸ Why?Add dis- to "honest" to form "dishonest" — not honest; telling lies or deceiving people.12She started to him after he lied to her twice. (TRUST)Correct answer: distrust▸ Why?Add dis- to "trust" to form "distrust" — to not trust someone; to be suspicious of them. "Mistrust" is also correct and is listed as an alternative.13Failure should not you. Learn from your mistakes and try again. (COURAGE)Correct answer: discourage▸ Why?Add dis- to "courage" to form "discourage" — to make someone feel less confident or less willing to do something. The opposite is "encourage".14The soldier refused to follow the order. He decided to the command. (OBEY)Correct answer: disobey▸ Why?Add dis- to "obey" to form "disobey" — to refuse to follow a rule or instruction.15The tight shoes caused her great . She could barely walk. (COMFORT)Correct answer: discomfort▸ Why?Add dis- to "comfort" to form "discomfort" — a feeling of physical or emotional unease. Here "discomfort" is a noun (the -ment suffix is NOT added because "comfort" is already a noun).Check AnswersPlease answer at least one question first.Found an error in this exercise? Let us know.