centThe pay was 10 cent per envelope.为什么这个cent不用复数形式呢?

centThe pay was 10 cent per envelope.为什么这个cent不用复数形式呢? 一道英文的数学题,John's pay was cut by 10%in a certain year.The following year he received a pay increase of 10%.Was his final pay more or less than before the pay out? Tom worked very hard.Soon his pay ____.A.rose B.was raised C.was risen D.raised 1.The fare is____.You don't have to ____the driver any more.A.paid,pay B.paid for,pay C.paid for,pay for D.paid,pay for选什么2.Tom said that it was over ten years since he_____to live in BeijingA.had come B.came C.was coming D.would come 为什么 How much was the uniform?They______me for $80 A.ask B.asked C.paid D.pay可是答句中有for啊 pay pay pay pay pay old Tom worked hard.why did he still live a hard life?because his pay was not enough to___the needs of the family.A.pay B.meet C.buy D.do此题为何选B?求详解 Your advice was a great help to us,without which all our efforts .A.wouldn’t pay off B.hadn’t paid off C.wouldn’t have paid off D.didn’t pay off The court required he -----the fine A.to pay B.must pay C.have to pay D.pay It?that the president of the United States will pay a visit to our country.A was reported Breports C is reported D has reported选哪一个 为什么? the newspaper was ordered to pay -------to the movie star for printing unture story about him.A.damage B.attention C.salraies.D.pensions The accident was my fault ,so I had to pay for the damage____the other car A at B to C on D for选哪个 I showed him __ pay attention to when he was buying a sencond-hand car.A.what to B.how to C.whatD.how Henry had to pay with the large bank note because it was all he had ——himA、in B、at C、on D、for