-Excuse me.How long can I keep the book?
-You can return it by the end of this month.
| A．give it away |
| B．come up with it |
| C．give it back |
| D．lend it again |
On the way to the post office, I heard some children ________the English song.
| A．sang | B．to sing | C．singing | D．sings |
The train ________ here at 6 o’clock.
| A．arrived | B．arrived to | C．arrived in | D．arrived at |
There will be ________water and ________trees in 100 years, how can we live?
| A．little, fewer | B．less, less | C．more, fewer | D．less, fewer |
Children are always ________ in ________stories.
| A．interesting, interesting | B．interested, interesting |
| C．interested, interested | D．interesting, interested |
There are about five _______ young trees on the hill.
A. hundred B, hundreds C. hundred of D. hundreds of