单项选择题

In the meantime, the question raised by our financial problems is()such research is worth the cost.

A. whether
B. that
C. how
D. because

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单项选择题

A. Less time is spent on tea in the UK than in other countries.
B. Quite a lot of time is spent on tea in the UK.
C. Britons drink more coffee than tea.

单项选择题

If the whole project()beforehand, a great deal of time and money would have been lost.

A. was not planned
B. has not been planned
C. had not been planned
D. were not planned