Maria didn’t hear me. She _______ with Betty.
To make our school more beautiful,rubbish________into the river. A.can’t throw B.mustn’t be thrown C.needn’t be thrown
—Your classroom is very clean. —Sure.It________after school every day.
—He’s never stolen anything before,________he? —________.It’s his second time to be taken to the police station.
The window________by some kids who were playing ball.
—Do you love reading Guo Jingming’s novels? —Of course I do,but I________them for a long time because I’m always busy.