Why didn’t you stop Mary cheating in the final exam? — But what _____otherwise? She just sticks with Alex and turns a deaf ear to my advice. [ ]

What do you think we can do for our aged parents? — You _____ do anything except to be with them and be yourself. [ ]

下列句子中，没有语病的一项是 （ ）

How many students arethere in the classroom——- ________ .They are all on the playground.

Since you are going to America, do ________ the chance to improve your spoken English.