It’s winter now. The weather is getting .
| A．very colder and colder | B．much colder and colder |
| C．more colder and colder | D．more and more cold |
—How often do I need to feed the dog?
—It ________ food every day, or it will be hungry.
| A．must give | B．must be give |
| C．must be given | D．must be gave |
—It's difficult to get to the other side of the river.
—I think a bridge ________ over the river.
| A．should be built | B．should build |
| C．will build | D．has built |
Flowers_____ along the road last year.
| A．plant | B．planted |
| C．are planted | D．were planted |
Pens are used for on paper.
| A．write | B．writing | C．to write | D．Wrote |
— Do you know in ancient China?
— I have no idea. But I know people once used tree leaves to make paper.
| A．how paper was made | B．how was paper made |
| C．what paper was made | D．what was paper made |