1. It is no longer a problem _____ the poor children in this district can go to school.

A. that B. whether C. so D. because

2. Part of the work is to be finished today and _____ by this weekend.

A. another B. the others C. the rest D. the other

3. With the worldwide oil crisis, the price of oil has been raised _____ 15%.

A. about B. with C. of D. by

參考答案及解析：

1. A。句中it是形式主語，代替 that引導的主語從句。故答案為A。

2. C。在四個選項中只有the rest可以代替可數名詞或不可數名詞，其它三個只代替可數名詞。句中要指代的work是不可數名詞。故答案為C。

3. D。by加百分數或表示數量的名詞，表示“相差的程度”。rise by“增加了”；rise to“增加到”。故答案為D。