-- ____ do you play chess?-- I play at least twice a week.A. How much B. How often C. How long
—Do you know ________? —All of them ________ the museum.
Tom has ________ that he lives a happy life.
________ everybody is here, let’s begin our meeting.
---Do you mind my sitting here, Tom? ---___________. It’s for our teacher, Mr Green.
---Don’t be nervous whenever you have a test. --- ____________.