. David_________the test for further study in the USA. Let’s have a small party to congratulate him on his success.A. has passed B. has been passing C. is passing D. had passed
---Can you lend me two magazines? ---Sorry, but I haven`t got_____ at the moment.
China has been pushing the reform of public hospitals ______ all its citizens.
It is described in her new book, one about sea life, ______this kind of fish lives in the deep sea.
Why do you insist on buying a car _______you have such good public transports here?
Though he is always thinking much of himself, he ______ be helpful when staying with others.