-Can you help me?

-Yes．I will do ________ I can to help you．

— What can you see from the screen?

— ________．

“Who is singing in the hall?”

 “________ is Mr．Smith．________ is known to us that it is he who wrote it．

-What ________ him last night?

-He fell ________ the bed and hurt himself.

—How is Tom?

— ________ .

-- Will you go to the museum tomorrow?

-- I will if I ________ no visitors.

-- Tell me, Mike. What's the ________ of the American Civil War?

-- Well, is it because the black slaves wanted freedom?

-How about going shopping at nine tomorrow morning?

-I’m afraid I can’t．I ________ an exam then．

-Has Tommy fixed his second-hand car yet?

-I have no idea, but he ________ it this morning．