The teacher and writer, as well as many guests ____ invited to the party held yesterday.
| A．is | B．were | C．are | D．was |
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 |
Nowadays people sometimes separate their waste to make it easier for it __________.
| A．reusing | B．reused |
| C．reuses | D．to be reused |
The chair looks rather hard, but in fact it is very comfortable to __________.
| A．sit | B．sit on |
| C．be seat | D．be sat on |
In the Grand Canyon, each rock layer can __________ a chapter in a book.
| A．regard as | B．think of as |
| C．be thought as | D．be regarded as |