The teacher raised his voice ____ all the students could hear him clearly.
| A．in case | B．so that |
| C．even though | D．so as to |
30. _____in a science competition, the three students were awarded scholarships totaling
$ 21, 000.
| A．To be judged the best | B．Judged the best |
| C．Having judged the best | D．Judging the best |
29.---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
| A．should have failed | B．couldn’ t have failed |
| C．might have failed | D．mustn’ t have failed |
28. Although this movie is based on past events, it is not _________ accurate．
| A．currently | B．perfectly | C．historically | D．Extremely |
27.---Ann looks hot and dry.
---So you if you had a high fever.
| A．do | B．are | C．will | D．Would |
26.---Did your father come back early last night?
---Yes. It was not yet eight o’clock ______ he arrived home.
| A．before | B．when | C．that | D．Until |