－Hi, I didn't know you had come back! Have you finished your teaching in America?
－Yes. I______Chinese there for more than two years.
| A．have been teaching | B．was teaching | C．taught | D．had taught |
Only after her mother came to help her for the first few months _____ to begin her project.
| A．she was allowed | B．was allowed she |
| C．was she allowed | D．she allowed |
_____ a family of chimps wake up is our first activity of the day.
| A．To watch | B．Watching | C．Watch | D．Watched |
Earlier that day, when they crossed the Rocky Mountains, they ____ to catch sight of some mountain goats and even a grizzly bear and an eagle.
A. tried B. had C, managed D. surrounded
. It is so wet there that the trees are extremely tall, some _____ over 90 metres.
| A．measure | B．measured | C．measures | D．measuring |
. Skiing in the Rocky Mountains and sailing in the harbour make Vancouver one of Canada’s most popular cities _____.
| A．to live | B．to live in | C．lived | D．living |