He ______ the math problem, his classmates wanted to help him out.
| A．sticking over | B．stuck | C．stuck with | D．sticking |
-$ 100，but that is my last offer.
-__________.
| A．OK, it, s，a deal. |
| B．What did you say? |
| C．Oh, it's up to you. |
| D．Good idea! |
The threats to the health of astronauts in space are very different from __________ on earth.
| A．ones |
| B．that |
| C．it |
| D．those |
He even __________ to call the deal off if we didn't satisfy his demands.
| A．scolded |
| B．threatened |
| C．warned |
| D．declared |
Mother has told us to __________ some candles in the house in case the electricity is off. So now we are busy __________ the coming night.
| A．prepare; preparing |
| B．prepare for; preparing |
| C．prepare; preparing for |
| D．prepare for; preparing for |
Some people maintain that watching violence on TV is one of the major causes of __________ behavior and crime in society.
| A．artificial |
| B．automatic |
| C．aggressive |
| D．allergic |