Please tell me how the accident_____. I am still in the dark.
| A．came by | B．came out | C．came to | D．came about |
Last night, there were millions of people _______ the opening ceremony live on TV.
| A．watch | B．to watch |
| C．watched | D．watching |
Some animals carry seeds from one place to another, ______ plants can spread to new places.
| A．so | B．or |
| C．for | D．but |
The crazy fans___________ patiently for two hours, and they will wait till the movie star arrives.
| A．are waiting | B．had waited |
| C．have been waiting | D．will wait |
When ____ to danger and conflict, men tend to increase blood pressure, ____ nervous or anxious.
| A．exposed; felt | B．exposing; felt |
| C．exposed; feeling | D．exposing; feeling |
It is believed that _____ European scientist invented _______.
| A．an; a television | B．a; a television |
| C．an; the television | D．a; the television |