The teacher asked an easy question, but not a proper answer _____.
| A．came up |
| B．keep up |
| C．catch up |
| D．was come up |
I often the words I don’t know in the dictionary or on the Internet.
| A．look up | B．look at | C．look for | D．look into |
Darkness before the traveler could find shelter for the night.
| A．set in | B．set down | C．set against | D．set forth |
The bank has a lot of all over the world.
| A．parts | B．branches | C．stores | D．shops |
I hesitate to get involved in this .
| A．advantage | B．adventure | C．advance | D．advice |
From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |