单选题 ( ) had I closed the door ( ) somebody started knocking on it.

单选题 They are trying to () the waste discharged by the factory for profit.

单选题 I like your methods of teaching very much and shall () them in my school.

单选题 I can't speak Japanese, but I do wish I () .

单选题 I don't think this problem is above your ability. I think you can () it.

单选题 The personnel manager will () all the applications and pick out the best.

单选题 The old couple decided to () a boy and a girl though they had three children of their own.

单选题 It was in the United States that I made the () of Professor Jones.

单选题 He spends money like water. In fact, his expenses on food and clothes are rather high () his income.