—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—Oh, dear! She _______ a lot of difficulties!
It's the third time ________ late for school this week.
With the price _______ so quickly, I find 1,000 yuan a month can hardly cover the cost of living.
Receiving the report that the plane crashed, the government took measures ______. .
We’ll have to work extra hours, for there are still some problems ____________ .
---Let me help you cross the street. --- ________ ! I’m not that old.