It is _______ useful book. I borrowed it from ________ school library.
| A．an; a | B．a; a |
| C．a; the | D．an; the |
Thank you for ______ me the e-mail.
| A．send | B．sends |
| C．sending | D．sent |
______ he comes back, I’ll tell him about it.
| A．Where | B．How |
| C．What | D．When |
It’s fun _____ in the park.
| A．play | B．to play |
| C．to playing | D．playing |
The girl is too young _____ to school.
| A．go | B．to go |
| C．going | D．not to go |
The boy will go to his _______ house.
| A．grandma | B．grandma’s |
| C．grandmas’ | D．grandmas |