I have his address, so I did not have any ________ his house.
A. difficulty finding out B. difficulty finding C. difficulty looking for
My parrot can make nice sounds, I can hear it_______ every day.
| A．singing | B．sing |
| C．to sing | D．sings |
The superman can burn things with his eyes._______ special his eyes are!
| A．What | B．What a |
| C．How | D．How a |
We mustn't play with fire. It_______ be very dangerous
| A．must | B．can |
| C．could | D．will |
Run_______ a field, walk_______ a forest, finally she found a small river.
| A．across; through | B．dross; through |
| C．through; across | D．through; cross |
We must keep our classroom_______-ants smell things_______.
| A．clean; good | B．cleaned; good |
| C．cleaned; well | D．clean; well |