Though English is very difficult to learn, _____ Li Ping _____ Li Lei speak English well．
| A．neither ; nor | B．either ; or | C．both ; and | D．either ; or |
As students, we ________ study hard to make our country more beautiful and stronger.
| A．should | B．may | C．can | D．could |
We will have finished ________ Unit 15 by April. We can review all the lessons.
| A．learning | B．learn | C．learned | D．to learn |
He is ________ to make money to support his parents.
| A．old enough | B．enough old | C．young enough | D．enough young |
The population of China is ________ than that of any other country in the world.
| A．large | B．small | C．larger | D．smaller |
The bell is ringing. Hurry up, ________ you’ll be late for class!
| A．and | B．but | C．while | D．or |