We were stuck on the way to the scenic spot, otherwise we ________ lots of fun there.
| A．had had | B．have had |
| C．could have had | D．could have |
It's necessary __________ the car when you do not use it.
| A．of you to lock | B．for you locking |
| C．for you to lock | D．for you to be locked |
I found it __________ the purport of his speech.
| A．was difficult to understand |
| B．difficult to understand |
| C．difficult understand |
| D．both A and B |
The person is very nice __________.
| A．to work with | B．to work |
| C．to be worked | D．to be worked with |
You are so __________ your car.
| A．silly not have locked |
| B．silly not to have lock |
| C．silly not to have locked |
| D．silly not to lock |
Attending this course will be of advantage for anyone __________.
| A．hoping to promote | B．to hope to promote |
| C．hoping to be promoted | D．hope to be promoted |