Trees can stop the sand _____ towards the rich farmland in the south.
| A．moved | B．to move |
| C．from moving | D．moves |
These are _______ cups. _______ are over there.
| A．our; Yours | B．yours; Mine | C．his; our | D．their; Your |
--- _______city is the capital of China?
---Beijing is .
| A．Where | B．What | C．Which | D．A and C |
- ______ is Sam? - I think he is at Tina’s home.
A. Who B. HowC. Where
Mr Green has three _______: Jim, Jeff and Jean.
A. sons B. children C. daughters
I want _______a pen _______＄4.
A. to buy; for B. to buy; in C. buy ; in