Those who failed to get into the art exhibition ________ disappointed as many of the artists who should have appeared did not come. 

—Isn’t that Ann’s husband over there?—No, it ______ be him-I’m sure he doesn’t wear glasses.

— May I park my car here, Sir?  —_________. You may park it over there.

A: ________ I go to the airport to see Uncle David off tomorrow morning, mum? B: No, you needn’t. You may join us if you want to.  

-----Do you know where David is ?  I couldn’t find him anywhere.-----Well. He _______have gone far-----his coat’s still here.