As we’re students，we________obey the school rules．
| A．can |
| B．may |
| C．must |
| D．could |
—_______ does your mother go to England？
—By plane.
| A．How | B．What | C．Where | D．Who |
You should ____ hard.
| A．studies | B．studying |
| C．study | D．Studys |
I like playing ______ pipa.
| A．a | B．an | C．the | D．/ |
—You won the first prize in the last Physics competition once again.
—___________. I made several mistakes.
| A．Congratulations | B．It doesn’t matter |
| C．Don’t mention it | D．You must be joking |
Much attention should be paid ____ the wild animals as many of them are dying out.
| A．to protecting | B．to protect | C．protecting | D．protect |