—Bread ______ butter?
— Bread ______no butter. thank you.
| A．or, and | B．and, but | C．or, but | D．and. and |
It was_________ back home after the experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t go |
An example of them is fraud, a crime _______ money is stolen by cheating others.
| A．which | B．that | C．what | D．where |
Dr. Frank failed many times but he finally _____ to find a successful way to solve the problem.
| A．broke off | B．broke up | C．broke down | D．broke through |
--Where have you been?
---I got caught in traffic, otherwise I _______ here earlier.
| A．would be | B．have been | C．had been | D．would have been |
The company _______ a rise in salary for ages but nothing has happened yet.
| A．has been promising | B．had promised | C．promised | D．promises |