27．In hot weather, an old tyre can break again easily _____it’s mended

If you happen to get lost in the wild, you’d better stay ______ you are and wait for help.

Amazing! You ____________ wear slippers at work. –Don’t you know it’s a fashion?

One of the students __________ good at ________piano.

, honey I’m afraid we aretoo busy to take a holiday at the present time— Could we take ______ two weeks fromnow