--- Credit cards are useful when travelling.
—True. They save us the trouble of taking too much cash.
| A．exactly | B．gradually . | C．particularly | D．hardly |
The boss requested that he _____ there to work.
| A．was sent | B．be sent |
| C．should send | D．would be sent |
You must ______ your papers before you hand them in.
| A．go down | B．go across | C．go out | D．go through |
Did you have any difficulty _____ his house?
| A．on finding | B．to finding |
| C．for finding | D．in finding |
Have you ______some new ideas？
| A．come about | B．come into |
| C．come up with | D．come out with |
He failed in the exam not only his laziness but also he didn’t listen to the teacher.
| A．because; for | B．because of; because |
| C．as; for | D．for; since |