问题

For kids of this age, two hours of sitting in a classroom ________ too long.
A:is
B:are
C:was
D:were;
B:are
C:was
D:were;
正确答案是:
同类题型
__________ a part-time job at the weekend does not necessarily mean not working on weekdays.
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ouldn’t spent our money testing so many people, most of_________are healthy.