Question

【题目】Tom should ____ his mother with the housework. ( )

A.helps

B.help

C.helping

D.helped

Answer 1

【答案】B

【解析】

句意：汤姆应该_________他母亲做家务。 should是情态动词，后面接动词原形，A帮助，单三形式，B帮助，动词原形，C帮助，现在分词，D帮助，过去式，故选B。