题目内容

You should be more confident_____ you attend the competition.

A. before
B. since
C. after
D. when

查看答案
更多问题

Don't leave the classroom_____ you finish your exercises.

A. before
B. since
C. after
D. when

Please buy a dozen of egges_____ you go to the grocery store.

A. before
B. since
C. after
D. when

Mary greets_____ at the gate of her store every morning.

A. costume
B. custom
C. customer
D. customers

The online store offers free delivery_____ the goods you buy are over 100 yuan.

A. wether
B. if
C. when
D. while

答案查题题库