Iv. choose the right item: a. 1. jill (has to/ must) keep to a diet. it’s her doctor’s recommendation. 2. alice, you (should cook/ should have cooked) supper because your mom is ill. 3. the conference (must/ to be to) begin at ten exactly. 4. children (needn’t/ shouldn’t) spend so much time playing computer games. 5. as he doesn’t have enough money for the ticket he (must/has to) walk. b. 1. listen! he’s singing the tune quite wrong/wrongly. 2. i am afraid, i hard/hardly know him. 3. have you been abroad late/lately? 4. he spent near/nearly all his money. 5. open the gates wide/widely. c. 1. neither/none of my parents is a scientist. 2. the cat has kittens and they say i can take either/any of the four. 3. he has many friends but i know only a couple/pair of them. 4. my sister had better/would rather eat fruit and vegetables than meat. 5. rich/ the rich have their own problems.