—       I try on those dresses in the window?
—      . They are just on show.

—Mum, must I stay there the whole day?
—No, you        . You         come back after lunch, if you like.

The woman who is talking with Mr. Brown        be Miss Li. She has gone to England.

—        I swim here?
—No, you       . Look at the sign “No swimming”.

—         you leave now? You only arrived here an hour ago.
—Sorry, but so much homework is waiting for me.

—Have you heard that our favorite teacher, Mr. Green, would leave?
—Don’t worry! The news        be true.

—How many English words do you think I should know?
—As many as you       . Then you will find reading quite easy.

—Whose book is this?
—It        be our geography teacher’s. You see, his name is on it.

—Have you decided where to go for your summer vacation?
—Not yet. We         go to Qingdao. It’s a good place for vacation.

—Dad, must we wait until the light becomes green?
—Yes, I’ m afraid we      .That’s the traffic rule.