It has been three months _______ he moved to this school.
A. since
B. once
C. when
D. until
查看答案
They _______ friends since they met in Shanghai
A. haven't been
B. have been
C. aren't
D. are
We'll have a picnic in the park this Sunday ____ it doesn't rain .
A. since
B. if
C. unless
D. until
If you ______ to the party , you'll have a great time .
A. will go
B. went
C. go
D. going
He _____ a letter to his grandparents if he _______ hos report card this week.
A. write ; get
B. will write ;gets
C. writes ;will get
D. will write ;will get