25. The train leaves at 6:00 p.m., so I have to be at the station ____ 5:40 p.m. at the least.
_____ I know the money is safe, I shall not worry about it.
When he was there, he ____ go to that coffee shop at he street corner after work every day.
—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.