I would appreciate ________ if you could teach me how to use the computer.
| A．that | B．this | C．it | D．you |
Ladies and gentlemen, please fasten your seat belt. The plane __________.
| A．takes off | B．is taking off | C．has taken off | D．took off |
________ you have a large vocabulary, you will find it easy to read.
| A．Once | B．Before | C．Unless | D．Even though |
________ you met the foreigner from Canada?
A. Where it was thatB Who it was that
C. Where was it thatD. Where was that
___ staying at hotels in Red River Village, tourists can help the villagers make money so that they can take _____the river and the birds.
| A．By; care for | B．By; care of |
| C．Through; care about | D．With; care of |
Paul started hiking in 2010 and he has hiked across 11 countries __________.
| A．ever since | B．from then on | C．right away | D．at once |