—Jack.All the young trees____at once. —OK.I'll do it at once.[ ]A. must be watered B. must wate

题目简介

—Jack.All the young trees____at once. —OK.I'll do it at once.[ ]A. must be watered B. must wate

题目详情

—Jack.  All the young trees____at once.        
—OK.  I'll do it at once.
[     ]
A. must be watered
B. must water
C. must be watering
题型:单选题难度:中档来源:同步题

答案

A

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