I don’t know what ________ of students in that school is, but you can see there are _________ of bikes and e-bikes outside the gate.
He asked me _______ I like the place _______ red.
Don’t worry. The children always work hard and the teachers _______ in class.
—Mr Wang’s never been to Canada , has he? —________. He went there on business last week.
—______ a week do you use your computer? —Twice.
—Can I buy a film ticket? —Oh, sorry, we ___________.