问题
Earth Day_______in 1970 to tell us to protect our planet.
A:sets up
B:set up
C:is set up
D:was set up;
B:set up
C:is set up
D:was set up;
正确答案是：
同类题型
_______ have you been in the sports club —Since the first month I came to the school .
I’m going to act in Jack Chan’s new movie!—Congratulations! You’re really——.
everyone present was amused by his adventure story inAfrica
These changes may cost quite a lot, _____ they will save us money in the long run