--How did the boss pay the workers--As a rule, they were paid(). A: by an hour B: by the hour C: by hour D: by hours

For one hour’s talk , about how long should you prepare for it?

How to correct the sentence:Driving through the rush hour traffic a moose was in the fast lane.

How long has she been there(). A: An hour. B: An hour and a half. C: Half an hour.

For one hour’s talk , about how long should you prepare for it? A: 30 minutes . B: About one hour . C: About two hours D: 7.5hours or more

How long does a man usually dream in an eight hour sleep In an eight-hour sleep, a man usually dreams for .

How long will the volunteer spend on math each week if teaching both math and English A: One hour a week. B: Two hours a week. C: One hour a day. D: Two hours a day.

She took it for granted ____ I'd been back home an hour ago. A: that B: whether C: how D: when

If your vessel bums 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 18 knots?（） A: 1382 tons B: 1561 tons C: 1600 tons D: 1637 to

how long will they stay in the museum of Terracotta Army? A: 1 hour B: 2 hours C: 3 hours D: 2.5 hours