(单选题)10: The little boy is dirty from head to foot because he ______ in the mud all morning. A: has played B: is playing C: has been playing D: was playing ...

(单选题)26: The little boy is dirty from head to foot because he ______ in the mud all morning. A: has played B: is playing C: has been playing D: was playing ...

(单选题)20: Professor Li, who I _______ abroad, still teaches in Peking University. A: think went B: think to have gone C: thought went D: thought had gone ...

(单选题)14: I am very disappointed _______the results of the experiment. A: from B: for C: to D: with ...

(单选题)36: ---Excuse me, where’s the Capital Theatre? ---_______. A: There’s a status near it B: It’s only two blocks away from here C: I’ve got two theatre tickets for tonight. D: Turn right and then you’ll find the cinema ...

(单选题)24: --You can't finish the book in less than an hour, I suppose? ---_______ . A: Yes, I'm sure I can B: No, hardly C: Sorry, I can't D: I don't think I can ...

(单选题)18: He spent________collecting materials for his article. A: a half year B: half year C: half a year D: half of a year ...

(单选题)38: The little boy is dirty from head to foot because he ______ in the mud all morning. A: has played B: is playing C: has been playing D: was playing ...

(单选题)26: In winter, animals have a hard time_______ anything to eat. A: to find B: to finding C: to find out D: finding ...

(单选题)20: A solid is different from a liquid _______the solid has its definite shape. A: in that B: in which C: in what D: because of which ...