The policy of the mainland is very clear and straightforward,and the key problem is ______ the leaders of Taiwan will accept it.
The continuous rain ______ the harvesting of the wheat crop by two weeks.
In 1989, a(n) _______law was passed by the United Nations to stop people putting waste into sea.
Whenever a big company ______ a small one, the product almost always gets worse.
In the low latitude area, it is usually very _____ all the year around.
She ______ her trip to New York because she was ill.