Since we can't hear you at the back of the hall, you'll have to __________ your voice.
（A）improve
（B）increase
（C）raise
（D）open
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更多大学英语选择题200道试题
- 1__________ a teacher in a university, it is necessary to have at least a Master's degree.
- 2It is desirable that the airplane ___________ as light as possible.
- 3As so many overseas business people have come to start and build new businesses, the place looks much more _________ than it did a few years ago.
- 4We forgave her anger because we knew that her father's illness had put her under great _________.
- 5The aircraft vanished without __________.
