(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)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)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)13: They have decided to ____________ another telephone line in their house. A: fit up B: fit in C: fit D: install ...

(单选题)1: ______ you eat the correct foods ______ be able to keep fit and stay healthy. A: Only if; will you B: Only if; you will C: Unless; will you D: Unless;you will ...

(单选题)33: The reason for his being late is _____ he didn’t catch the early bus. A: why B: because C: that D: where ...

(单选题)37: After Jackson ______ for an hour, he came to the conclusion that Mrs. Bonnie was not coming. A: waited B: was waiting C: has waited D: had been waiting ...

(单选题)7: A ____________ of stones fell on the police who were trying to hold people back. A: fit B: pile C: crowd D: rain ...

(单选题)21: With a school record like yours, _____ why you didn’t try for a university scholarship? A: I’m shocked B: I’m puzzled C: i’m amazed D: i feel pity ...

(单选题)35: The problem has ______ simply because you didn’t follow my instruction. A: raised B: risen C: arisen D: aroused ...