Question

【题目】He is serious about soccer because he wants to be a soccer player

A. play B. plays

C. to play D. playing

Answer 1

【答案】D

【解析】试题分析：句意为，他很热衷于踢足球，因为他想成为一名足球运动员。Be serious about是对某事认真，热衷于做某事，后面接名词或动名词形式。故选D。