[单项选择]My train arrives in New York at eight o’clock tonight. The plane I would like to take from there （） by then.
A. would leave
B. will have left
C. has left
D. had left

[单项选择]My train arrives in New York at eight o’clock. The plane I would like to take from there ______ by then.
A. would leave
B. will have left
C. has left
D. had left

[单项选择]My train arrives there at eight. The plane I would like to take （　） by then.
A. will have left
B. has left
C. had left
D. would leave

[填空题]My train arrives in Shenyang at seven o’clock tomorrow. The plane ______ (我想乘坐的可能已经从那里起飞了).

[填空题]—"May I speak to Mr. Williams at five o’clock tonight " —"I’m sorry. Mr. Williams ______ (在那之前早就去开会了)

[单项选择]
Why is it that flying to New York from London will leave you feeling less tired than flying to London from New York The answer may be a clear case of biology not being able to keep up with technology.
Deep inside the brain there is a "clock" that governs every aspect of the body’s functioning: sleep and wake cycles, levels of alertness, performance, mood, hormone levels, digestion, body temperature and so on. It regulates all of these functions on a 24-hour basis and is called the biological clock.
The body clock programs us to be sleepy twice a day, between 3-5 am and again between 3-5 pm. Afternoon tea and nap are all cultural responses to our natural biological sleepiness in the afternoon.
One of the major causes of the travelers’ malady known as jet lag is the non-alignment of a person’s internal body clock with clocks in the external world. Crossing different time zones confuses the biological clock, whi
A. you can control your own body clock
B. it is not difficult to adjust to a new time zone
C. adjusting your watch can help you avoid jet lag
D. there isn’t much you can do to avoid jet lag