When I got into the classroom, I found a book ______ on the floor.
| A．lying | B．lies | C．lie | D．lied |
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.
| A．on | B．at | C．for | D．with |
When will the Greens arrive _______ Nanjing.
| A．at | B．in | C．on | D．to |
My mother arrives late _______ work because of the heavy rain.
| A．to | B．in | C．for | D．at |
I have _______ my room every day.
| A．clean | B．cleaning | C．to clean | D．cleans |