Question

【题目】We are having fun in the river.

A. swim B. swimming C. swiming D. to swim

Answer 1

【答案】B

【解析】句意：我们在河里游泳玩得非常开心。swim游泳，动词原形；swimming动名词形式；swimming形式错误，应双写m再加ing；to swim动词不定式。这里使用的句型是have fun doing sth.做某事很开心，应用动名词形式。故选B。