You seem to have known DrKen for a long time.—That’s true________ he joined our club years ago

It takes______ half an hour ______ English every day.

______ we clean the classroom at once–No, you _____. You____ clean it afterschool.

I’m sorry you’ve missed the train. It ______10 minutes ago.

He didn’t listen to the teacher carefully.,he couldn’t answer those questions.