There ____ a book and a pen on the desk.
| A．has | B．have | C．is | D．are |
The cup is on _____ desk.
| A．teacher | B．teacher’s | C．teachers | D．the teacher’s |
Are they doing____ homework?
| A．them | B．theirs | C．they | D．their |
What are you ____?
| A．looking for | B．look at | C．looking to | D．looking |
--____ does Mary ___?
---The USA.
A. When; come from B. Where; from C. How; go D. Where; come from