问题
选择题
Turn off the water while you ________ your teeth or washing your hands.
A.were brushing
B.brush
C.are brushing
D.brushed
答案
答案:C
题目分析:句意:当你刷牙或者洗手时关掉水管。while引导的从句中常用进行时态。当主句描述将来动作时,条件从句中常用现在时态,故选C。
Turn off the water while you ________ your teeth or washing your hands.
A.were brushing
B.brush
C.are brushing
D.brushed
答案:C
题目分析:句意:当你刷牙或者洗手时关掉水管。while引导的从句中常用进行时态。当主句描述将来动作时,条件从句中常用现在时态,故选C。