Why are you ready ________ Jour study in America? 一Because English is spoken ________ the first language there. [ ]

The number of the classes in our school is __________ than__________ of any other school in Nanjing．

I find ________ difficult to remember everything, though I’m still young.

We are doing much better______ English _____our teachers’ help. [ ]

Carl, why not go and help your sister water the flowers there? —Why__________? I’m busy myself. Jack is lying on the grass doing nothing.