Tom and Mike are in ___________ school, but they are in ________classes.
| A．same; the different | B．same; different |
| C．different; the same | D．the same; different |
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 |
I was_______ to know that dodos_______ on the earth a long time ago
| A．surprised; live | B．surprised; lived |
| C．surprise; live | D．surprising; lived |
Walk_______ the house, turn left and you'll see the big bridge_______ the river.
| A．pass; above | B．past; over |
| C．pass; on | D．past; on |