In such cheerful conversation, the time ________ all too quickly.
went up
went down
went by
went back
In our class, about ______ of the students ____ girls.
—How can we become good at playing basketball ? — ____ practicing it as much as possible.
(原创) Can you tell me _____________________?
-Tom has no difficulty passing the final exam. --________, and ____________.
---Don’t forget to hand in your homework, Tom, will you? ---Sorry, I promise_______.