The old woman has something wrong with her eyes and has to have them______.
| A．operated on | B．operated |
| C．operate | D．operate on |
—The air pollution is so terrible.
--It will be worse we do something to protect the environment.
| A．if | B．unless | C．after | D．when |
We should do what we can our English.
| A．improve | B．improved |
| C．to improve | D．improving |
–Whose dictionary is this?
-- It be Jack’s. Here’s his name.
| A．must | B．mustn’t | C．can | D．can’t |
–You’re in a hurry. Where are you going?
--To the library. Tony for me there.
| A．waits | B．waited |
| C．is waiting | D．was waiting |
–Lucy and Lily look the same. Are they twins?
-- Yes, but Lucy is of them.
| A．the taller | B．the tallest |
| C．taller | D．tallest |