—Will you go to Mary’s birthday party?
—No, ____ invited, I can’t go to it. I’ll be too busy then.
| A．if | B．unless | C．even though | D．when |
The policeman warned the drive ________ so carelessly.
| A．never to drive | B．to never drive |
| C．to not drive | D．doesn’t drive |
When we visited Zhangzhuang again ten years later, we found it changed so much that we could hardly ________ it.
| A．remember | B．think about | C．believe | D．recognize |
Can you tell me if you have found the key ________ your car.
| A．for | B．to | C．about | D．by |
Sometimes ________ English is quite different from _______ English in many ways.
| A．speaking, writing | B．spoken, written |
| C．speaking, written | D．spoken, writing |
_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |