—Mary was heard _______ just now. What happened?
—John was telling a joke.
| A．cry | B．to cry | C．laugh | D．to laugh |
—Must I be home before eight o’clock, Mum?
— No, you . But you have to come back before ten o’clock.
A. needn’t B. can’t C. mustn’t
Teachers often tell us in the river after school.
A. don’t swim B. not swim C. not to swim
Remember toyour mobile phone when the plane takes off.
A. turn on B. turn down C. turn off
I’m going to start a club to help students are not interested in schoolwork.
A. whose B. who C. whom
— Your classroom is really bright and clean.
— It after school every day.
A. is cleaned B. cleaned C. was cleaned