—Could you help me do the dishes？
—Sorry，my sister________for me outside now．
| A．waits |
| B．will wait |
| C．is waiting |
| D．was waiting |
The little girl couldn’t be a student because of her __________.
| A．ill | B．sick | C．illness | D．sad |
__________ is really hard _ _ them to climb such a high mountain.
| A．This; to | B．It; to |
| C．This; for | D．It; for |
We must _______ to help them out of trouble.
| A．try our best | B．try your best |
| C．try | D．trying |
Must I go to a medical school and be a doctor like you ,Dad?
No,you _______ .You’re free to make your own decision .
| A．can’t |
| B．mustn’t |
| C．shouldn’t |
| D．needn’t |
English isn’t as __________ as Chinese.
Maybe, perhaps it’s just because Chinese is your native language.
| A．easy | B．easily | C．easier | D．easiest |