--Jack's never worked hard at English, _______?-- _______ , so he can't answer the question in English, I think.
—I hear that Lily’s brother is a worker here. —Look, the man _________ is working over there is her brother.
________ bad weather it is! It’s rainy for two weeks.
Tom, you can go out to play football after your homework ___ A finishes B.is finished C.was finished D.will finish
The teacher told us that light _____ much faster than sound.
She finds ____ hard to understand the spoken English.