题干

(2015·浙江)If you swim in a river or lake, be sure to investigate            is below the water surface. Often there are rocks or branched hidden in the water.

A:what

B:who

C:that

D:whoever

上一题 下一题 0.0难度 选择题 更新时间:2019-08-12 10:35:07

答案(点此获取答案解析)

A