(单选题)20: Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen years old! A: must be B: must have been C: could be D: should have been ...

(单选题)14: Please return in an hour. I’ll be ready _____ then. A: till B: by C: at D: on ...

(单选题)8: It _____John and Mary that helped me the other day. A: has been B: are C: was D: were ...

(单选题)2: 1. The police are________ the two missing children. A: looking out B: looking after C: looking for D: looking on ...

(单选题)18: "I had to walk home yesterday: I had no money for my fare.""You______ me l I could have lent you the money!" A: ought to tell B: must have told C: must tell D: should have told ...

(单选题)12: This coastal area ________ a national wildlife reserve last year. A: was named B: named C: is named D: Names ...

(单选题)8: "Paul may have gone to the playground to watch a football match." "No, if there'd been a match today, he_____ ." A: could've told me B: might've told me C: would've told me D: must've told me ...

(单选题)16: She was the only child in the family, but they didn't ______ her. A: hurt B: damage C: spoil D: harm ...

(单选题)10: "The windows need washing." "Well, let's wash them together, ________ ? A: shall we B: will we C: won't we D: should we ...

(单选题)4: You _______ the news: he knew it already. A: needn't tell him B: needn't have told him C: didn't need to tell him D: need not to tell him ...