________ wants to stay in a hotel has to pay their own way.
—How about paying a visit to Mr. Richardson, our former history teacher?—Good idea. I will e-mail him today so he ___ know ___ to expect us.
____ at a college or university in the USA, Chinese and other international students must demonstrate a strong ability in spoken and written English.
With a lot of difficult problems ____, the manager felt worried all the time.
As we all know, it was _____ that resulted in the terrible car accident.
In order not to be disturbed ,I spent three days __________ in my study.