6.I doubt _______ they can complete the bridge ahead of time.

　　A. whether B. that C. why D. what

　　7.The question he asked was _______ I come here.

　　A. that B. how C. what D. because

　　8.Too many people are indifferent _______ others‘ troubles.

　　A. with B. to C. of D. about

　　9.Let us see how dictionaries are made and how the editors _______ definitions.

　　A. lead to B. arrive at C. reach for D. approach to

　　10.Shanghai is the place _______ I was born.

　　A. on which B. in which C. when D. that

　　参考答案：

　　6.正确答案：A答案解析：doubt 用在肯定句中，之后的宾语从句用 whether 或 if 引导。用在否定句中，后接宾语从句用 that 引导。

　　7.正确答案：B答案解析：这里表示的是：来的方式，要用how.

　　8.正确答案：B答案解析：indifferent，形容词，“漠然的、冷淡的”，常用indifferent to.

　　9.正确答案：B答案解析：本题考查词义辨析。arrive at：获得(结果);达到(目的)。

　　10.正确答案：B答案解析：出生在某地，要用介词in.此句话中，in which=where.