— Hello, Betty! Where are you now? — I ________ on the Great Wall of China and talking to you.
It’s snowing all day, so mybrother ______ stay at home. A.must B.have to C must to D.has to
The two boys are fighting _______ each other.
When will the Greens arrive _______ Nanjing.
My mother arrives late _______ work because of the heavy rain.
I have _______ my room every day.