Many officials _______ the matter were arrested and would be put in prison.

What we want is an environmentally friendly car, especially ____ is good on gas.

I had so much trouble her Wechat (微信)number. You should thank me.

You didn’t wait for Mr. Smith last night, did you—No, but we ______. He didn’t return home at all.

This English dictionary is expensive, but it is of ________.