As is known to all language learners, the newly learnt words will soon be forgotten unless _________ used in everyday communication.
| A．gradually | B．actually | C．entirely | D．frequently |
— We expected you yesterday．
— I'm sorry, I you to say that I couldn't be here until today．
| A．must have called | B．would be calling |
| C．could have been calling | D．should have called |
— Why did you give up the job in America?
— Because I don’t want to stay far away from my girlfriend. You know, she means ______ to me.
| A．everything | B．nothing | C．anything | D．something |
Clean water and fresh air are essential for our daily life, _______ we can’t live.
| A．by which | B．without which | C．that | D．on which |
— Thank you very much for helping me to solve the problem.
— _____.
| A．Don't mention it | B．With pleasure | C．That's right | D．You said it |
In my view, realizing ______ great renewal of the Chinese nation is _______ Chinese nation's greatest dream in modern history.
| A．the；the | B．a；the | C．a；不填 | D．the；a |