The weather in Harbin is colder than ____in Gang Dong.
---Would you mind ______ your bike? --- No, not at all. I’ll put it under the tree right away.
--- Could you tell me _____ ? --- Because she likes her students very much.
---_____you _____ out the problem, Sam? --- Not yet, but I’m going to.
--- Some of the plastic bags can’t ______ after June1. --- Yes, people will use environmental bags instead.
--- All the clerks went home _____ Mr. Wang. Why? --- Because he had to finish his work.