What has he been doing _________? I haven’t seen him much recently.
When did China __ the first man-made satellite to circle the earth, do you know?
Stand there! I'll __ you.
___ the help of his teacher, he has passed the English exam.
The children ___ not to play football in the street.
I bought a dress for you only 10 dollars in a sale; it was a real _____.