We don’t allow at school. It’s bad for our health.

I’m flying to Hainan Island for my holiday this weekend.—Wonderful! ________

The child tiptoed(翘起脚尖走) quietly to the bird. ______ into the forest when he was about to catch it.

the subjects, I like ____ history best becauseit gives us ____ useful knowledge of things in the past

There is some doubt _________ Mr Zhang will sign the contract with us.