【原创】In addition to world hunger, some environmental problems human activities have contributed to ______ soon.
| A．need solving | B．needing solving |
| C．needing to be solved | D．need to solve |
They are good friends.is no wonder that they know each other so well.
| A．This | B．That | C．There | D．It |
We tried to find a table for seven, but they were all.
| A．given away | B．kept away | C．taken up | D．used up |
Many Jewsto America during the Second world war for their safety.
| A．traveled | B．fled | C．settled | D．ran |
—David has made great progress recently.
—, and.
| A．So he has; so you have | B．So he has; so have you |
| C．So he does; so have you | D．So has he; so have you |
The Great wall is knownthe world.
| A．for | B．as | C．on | D．to |