It’s beyond our comprehension that Jim, who tops the class in English, ________ have difficulty translating such a simple sentence.

-----Could I have a look at your i-phone5s, dad?------Oh, dear, if you_______.

--- Look, Mr Green is on the other side of the street. --- It _____ be him.He has gone to London on business.

There is a “ No smoking “ sign here. You _________ smoke.

—Excuse me. Is this the right way to the Summer Palace? —Sorry, I am not sure, but it ____ be.