— Susan, would you like to go hiking with us this afternoon?— I'd love to, but I study for a test.A. may B. have to C. can
We visited the factory __ ___ makes toys for children.
—Can you make sure __ ___?— Sorry, I can’t. But I did see her just now.
Our English teacher often uses different activities_ __ keep us_ __ in class.
On Spring Festival’s Eve, people _____ home to get together with their families.
The ship _____ for twenty minutes. You have to wait for the next.