Some kinds of animals can change their color with _______.
A. conditions B environment C. surroundings D. situation
You will have an accident if you don’t ______, for the road is icy.
| A．make out | B．pick out | C．bring out | D．watch out |
The reason ______ Old French made contributions to Middle English is ______ English borrowed many words from it.
| A．why; because | B．that; because | C．why; that | D．that; that |
I suggest they _______ at once.
A. setting off B .to set off C. set off D have set off
There are three eggs _______ by the hen_______ under the tree.
| A．lied, laying | B．lay, lying | C．laid, lying | D．lain ,laying |
Don’t worry. I’m sure you’ll succeed _______ if you work hard.
| A．on time | B．in time | C．at times | D．ahead of time |