( ) 12. He needs one more stamp before his collection __________.
If you don’t study hard, you’ll regret, _____ you?
I thought _____ no use talking with him. _____ was a waste of time.
Every boy and every girl ________ pleased when they saw Shenzhou VI was sent up to space.
—How long have you been in this office?—Just a few minutes. My cousins__________ here together with me.
In America, _____ car is _____ popular means of transportation.