That clever boy regards the problems________challenges．
| A．as |
| B．of |
| C．for |
| D．to |
The ______ is _______ difficult to answer.
| A．question, a kind of | B．question, kind of |
| C．question, kinds of | D．question, a kind |
I usually _____ to the bus stop and then go to school by bus.
| A．by bike | B．on my bike |
| C．take bikes | D．ride my bike |
There are _____in our school.
| A．two hundred teacher | B．two hundred teachers |
| C．two hundreds | D．two hundreds teachers |
Miss Zhao is good ___ music. She can be good ___ kids in the music club.
| A．at; at | B．with; with |
| C．at; with | D．with; at |
Our teacher always helps us ____ our English.
| A．for | B．into | C．on | D．with |