-How amazing it is that astronauts are exploring outer space!
-It’s a challenge, I guess, ______ man against nature.
| A．of | B．for | C．by | D．about |
_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
| A．Which | B．What | C．It | D．That |
In no way should we hunt and kill antelopes. _____, everyone should make great efforts to protect them.
| A．In time | B．As a result | C．In addition | D．On the contrary |
I saw Tom _____ into the classroom without _____.
| A．slide; found | B．sliding; find |
| C．sliding; being found | D．to slide; being found |
Having been attacked by terrorists, _____.
| A．doctors came to their rescue |
| B．the tall building collapsed |
| C．an emergency measure was taken |
| D．warnings were given to tourists |
You can’t predict everything. Often things don’t _____ as you expect.
| A．run out | B．break out | C．put out | D．work out |