2.Do think ____ reading.　　A.while B.when C.as D.for

2.Do think ____ reading.　　A.while B.when C.as D.for
2.Do think ____ reading.　　A.while B.when C.as D.for

2.Do think ____ reading.　　A.while B.when C.as D.for
A
while 当……的时候
阅读的时候务必要思考.

【俊狼猎英】团队为您解答.

a

A/

while

A

A. while

A