I wanted to catch ________early train, but couldn’t get ________ ride to the station.
| A．an, the | B．/, the | C．an, / | D．the, a |
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 |
—May I ask a question after class，sir?
—____，but not during my lunch break．
| A．Take it easy | B．No way | C．Certainly | D．Go ahead |
The fire spread fast．Luckily the local government had brought it under control___the situation got worse．
| A．though | B．until | C．before | D．since |