This is the hour______Thailand is always full of political violence.A．thatB．whenC．whereD．h

— The trip ought not to take more than an hour.— ____________ . It is at least two hours

She wants to know if it is 600 milesan hour ______ the newest plane can go.

Two hours _____ the limit of this test.A、areB、has beenC、will beD、is

In my eyes, his request that his cost ______ by the hour is completely reasonable.A．is pai

I believe engaging in paid work is acceptable ______ the conditions are safe, the hours ar

The efficiency of coal－charging machine is very high, ______, 1 500 tons of coal per hour.