Question

【题目】The ducks _____ in the water.

A.is swimmingB.are swimingC.are swimming

Answer 1

【答案】C

【解析】

鸭子正在水里游泳。此句是现在进行时态，be+v-ing构成，主语是复数，所以动词用are, swim的现在分词是swimming, 应选C。