______ enough time and money, the scientists would have been able to discover more in this
A. Giving
B. To give
C. Given
D. Being given
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According to the man, what kind of diet should he follow？
A very restrictive diet eating only salads.
B. A moderate diet with no sugar.
C. A very mild diet with lots of sweets.
D. A strict diet eating one meal a day.
Throughout the passage, the author is ______ in his attitude towards playing games.
A. favorable
B. critical
C. neutral
D. hesitant
He moved away from his parents, and missed them ______ enjoy the exciting life in the big
A. too much to
B. enough to
C. very much to
D. much so as to
The passage is mainly about ______.
A. the shaping of the tipping system
B. the practice of tipping in US
C. the popularity of tipping
D. the Origin of tipping
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