wonder why he hasn’t __ any of my letters for such a long time.

Shakespeare’s play Hamlet ________ into at least ten different films over the past years(2013·北京，23)

Big animals can be a lot of trouble. Maybe you should get asmall pet, like a goldfish.–______.

I ____ Mr. White at that time,otherwise I wouldn’t have asked you for some information about him.

Jenny took the 8:00 bus to Guangzhou this morning. — Really? He _____the 9:00 train. It’s much more comfortable and safer to travel by train. [ ]