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 |
Let’s listen ________ the song together.
| A．to | B．at | C．on | D．on |
—Does he go to bed at 9:00?—Yes, he _______.
| A．is | B．goes | C．does | D．do |