I told your friend how to get to the hotel,but perhaps I___have driven her there.

The teacher_____have thought Johnson was worth it or she wouldn’t have wasted time on him,I suppose.

—What do you think we can do for our aged parents?—You___do anything except to be with them and be yourself.

—Turn off the TV,Jack._______ your homework now?—Mum,just ten more minutes,please.

In crowded places like_____airports and railway stations,you _______ take care of your luggage.

Peter ______ be really difficult at times even though he’s a nice person in general.

What a pity. Considering his ability and experience, he ____ better.

  ---How’s your tour around the North Lake? Is it beautiful? ---It ________ be, but it is now heavily polluted. 

 --- Guess what! I have got A for my term paper. --- Great! You ______ read widely and put a lot of work into it.

_____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.

According to the air traffic rules, you______switch off your mobile phone before bearding.

You don’t have to know the name of the author to find a book. You ____find the book by the title. 

It is usually warm in my hometown in March, but it _____ be rather cold sometimes.

 Thank you for all your hard work last week. I don’t think we _____ it without you. 

John promised his doctor he ________ not smoke, and he has smoked ever since.

 It was playing computer games that cost the boy plenty of time he ____ doing his lessons.

It’s unbelievable that such a small girl ____ have so much knowledge about computer.

 To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.

--- I hear you have written a novel. --- Yes, the book ______ come out in a month or so.

Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”