(单选题)18: They will never succeed, ____ hard they try. A: because B: however C: when D: since ...

(单选题)12: A great deal of ____ was done to crops. A: damages B: damaging C: damage D: ruin ...

(单选题)6: The manager, ____ it clear to us that he didn’t agree with us, left the meeting room. A: who has made B: having made C: made D: making ...

(单选题)25: This is ____which is collected before the first rain in Spring. A: one tea B: a tea C: the tea D: that tea ...

(单选题)19: The trees in that thick forest are so dose together that there is hardly any room to move ____ them. A: between B: in C: among D: across ...

(单选题)13: ____ caused the accident is still a complete mystery. A: What B: That C: How D: Where ...

(单选题)14: The TV program is boring. Shall we play chess instead? All right. That is ____ than watching a boring program. A: very good B: much good C: very better D: much better ...

(单选题)8: Enough attention must be paid ____ all the details so that you can have a detailed understanding of all the points. A: on B: to C: of D: by ...

(单选题)2: —Do you like coffee or milk? —Both. But I prefer coffee ____ milk. A: to B: for C: with D: from ...

(单选题)21: He lost his fob and ____ his wife left him. A: on that top B: on top of that C: on a top of that D: on the top ...