(单选题)19: Years ago we didn't know this, but recent science ______ that people who don't sleep well soon get ill. A: showed B: has shown C: will show D: is showing ...

(单选题)14: I have been ill for two weeks, and so I must try to ________ my work. A: come up with B: catch up with C: put up with D: stand up with ...

(单选题)9: Very soon after the ________ of the fight the young man was arrested. A: outbreak B: outlook C: outlet D: outcome ...

(单选题)4: Jack is good, kind, hard-working and intelligent. __________, I can't speak too highly of him. A: As a result B: By the way C: In any case D: In a word ...

(单选题)19: Study hard, ______ you will fail in the exam. A: still B: also C: or D: therefore ...

(单选题)14: I ______ the present, but I didn’t _______ it. A: received, receive B: received, accept C: received, accepted D: accepted, received ...

(单选题)9: The team really looks good tonight because the coach had them____ every night this week. A: practice B: to practice C: practiced D: practicing ...

(单选题)4: I saw him _______ out of the room. A: go B: had gone C: has gone D: goes ...

(单选题)19: ——What's the problem with your bike? — _________ A: Not at all B: Good, thank you. C: Nothing serious D: Sure ...

(单选题)14: I usually go there by train.---Why not _______ by boat for a change? A: try to go B: try going C: try go D: go to try ...