【单选题】____________ Jenny always take the bus ?
【简答题】Did the speaker always like the car?______, he changed.
【单选题】由于短期内固定成本为一个常数,不受产量的影响,因而( )就是产量变动引起的可变成本的变动。
【单选题】— He hardly hurt himself in the accident, did he﹖ —_______ He is always careless.
【单选题】由于短期内固定成本为一常数,不受产量的影响,因而( )就是产量变动引起的可变成本的变动。
【单选题】When he did go to school, he ______.
【单选题】So clearly _____ English that he can always make himself understood