—Do you think the thief entered through the window?
—No, if he had, I don’t believe, _______ broken the living-room’s window.
| A．he would have | B．he must have |
| C．he had | D．should he have |
---What’s made Tommy so upset?
--- ______, I believe．It shocked him so much．
| A．He lost the game | B．Lost the game |
| C．Losing the game | D．Because of losing the game |
---I’m sure Andrew will win the first prize in the final．
---I think so．He ______ for it for months．
| A．is preparing | B．was preparing | C．had been preparing | D．has been preparing |
All the students ______ gets along very well with will be invited to her birthday party．
| A．who | B．that | C．she | D．what |
Some old Chinese customs, many of you are too young to know, have already died out．
| A．what | B．that | C．how | D．as |
Whether ways will be found to stop pollution or not is just _______ worries the public．
| A．why | B．which | C．that | D．what |