Mostofthetimeweareunawareofwhat
来源:语文精选馆 2.36W
问题详情:
Most of the time we are unaware of what ______ in our bodies; usually it is only when we get sick or feel pain that we notice.
A. happen B. happens C. is happening D. has happened
【回答】
C
知识点:现在进行时及其被动式
题型:选择题