What are you ?
A. do
B. to do
C. doing
答案：C
Can you come and join _______ School Trip?[ ]
A. us
B. our
C. we
D. them
下列各项，不属于生理性闭经的是（）
A.育龄期闭经
B.妊娠期闭经
C.哺乳期闭经
D.围绝经期闭经
E.绝经期闭经
