问题

Group activities will be organized after class _______ children develop team spirit.

A:helping
B:having helped
C:helped
D:to help;

正确答案是：

同类题型

They can surely overcome those difficulties ___ they are closely united

Skating is getting __________ now. Many people like to skate.

How many students are there in each group— Usually each group _______ six students in our class.

Not only______ polluted but _____ crowded.[ ]

One reason Crystal has become so famous is that he is very quick thinking, and is often able to _____ new jokes about the people and things around him.