(单选题)3: Someone is ringing the doorbell. Go and see _________. A: who is he B: who he is C: who is it D: who it is ...

(单选题)10: I lost a book, ______I can't remember now. A: whose title B: its title C: the title of it D: the title of that ...

(单选题)17: _____ the rain stops, we' ll set off for the station. A: Before B: Unless C: As soon as D: Though ...

(单选题)24: The order came that the medical supplies _____ to Beijing for the Sars soon. A: would be sent B: should send C: be sent D: must be sent ...

(单选题)6: She was _____ tired _____ she could not move an inch. A: so, that B: such, that C: very, that D: so, as ...

(单选题)25: I read about it in some book or other. Does it matter ___________ it was? A: where B: what C: how D: which ...

(单选题)7: We will work ____ we are needed. A: whenever B: because C: since D: wherever ...

(单选题)2: “Sustainable development” is a question _______ we can continue developing the world without damaging the environment. A: why B: when C: that D: how ...

(单选题)15: It seems that the old man _________something important. A: has lost B: had lost C: lost D: would lose ...

(单选题)23: Great changes have taken place since then in the factory _______we are working. A: where B: that C: which D: there ...