The white trainers are nice. Can I _______?

Surfing first started on the islands of Hawaii, didn’t it?–Yes, but now it ______ by people all over the world.

Could you tell me if Li Lei____________ to my party, Linda?—Sorry, I am not sure. If he ___________, he’ll call you.

Tom, where is your father?- I’m not sure. He _______ in his office.

Let’s go hiking ______ staying at home, shall we? — A good idea. [ ]