—Must I hand in the weather report this morning?--No, you__.A. mustn't B. needn't C. may not
The Greens ____________ in China since 2008.
I saw a street cleaner __________ the street when I went to school this morning.
Planes are _________ than trains and buses.
My father drives sick people to the hospital, because he is a/ an _______.
My new classmate, John is a boy from ____.