问题

_ social workers _. We really enjoy doing volunteer work very much.

A:To be; are fun
B:Being; is fun
C:Being; are fun
D:To be; is funny;

正确答案是：

同类题型

ys, Internet shopping will really_____when people are sure that it is safe.

__ the help of her teacher,Mary ________ in the past few months

won’t have anyone _______ in here. _________breaks the regulation will get punished.

______ do you use the Internet— Almost every day.

Only when it is hungry______ a human being.