问题
选择题
These flowers ______, or they will die soon. [ ]
A. must water
B. must be water
C. must be watered
D. must be watering
答案
答案：C
搜题请搜索小程序“爱下问搜题”
These flowers ______, or they will die soon. [ ]
A. must water
B. must be water
C. must be watered
D. must be watering
答案：C