Gone are the days when China, a major economic power in Asia today, ________ at the mercy of others.[ ]

______ their service, the workers of the hotel areactive in learning English.

下列字母________是元音字母，26个字母中第16个字母是________。

The stronger the ______ is, the more quickly a person will learn a foreign language.

She is on holiday at the moment, but she’ll be back next week.