(单选题)33: They lit a fire to keep wild animals ___ the grounds. A: at B: on C: from D: off ...

(单选题)21: I’ll trade you five comic books ____ your knife. A: to B: with C: in D: for ...

(单选题)15: I was quite taken ____ by his attitude. I never expected he would disappoint his parents by doing such a thing. A: back B: aback C: after D: apart ...

(单选题)9: In discussing environmental pollution we ought to keep ____ the point of concern. A: to B: at C: on D: off ...

(单选题)47: Don’t bother running ____ the bus. You will never catch it. A: after B: about C: across D: over ...

(单选题)41: Only by combining our efforts ____ those of other people can we triumph over the difficulties we are now facing. A: into B: onto C: within D: with ...

(单选题)35: He was a good worker who was ________ to his family as well as to his work. A: consistent B: committed C: content D: engaged ...

(单选题)29: Our neighbor said that if we made more noise he would _______ us to the police. A: inform of B: complain about C: report to D: care for ...

(单选题)23: The historical and cultural background to the play has been very carefully and thoroughly ___. A: searched B: researched C: sourced D: reserved ...

(单选题)17: Some pupils fill their spare time ____ computer games. It is really a waste of time. A: with B: by C: to D: into ...