The first thing ________ I did was to see if there were any products ________ might help me, but there only seemed to be powders ________ to kill snakes.
| A．that; /; designed | B．which; that; designed |
| C．/; that; designed | D．/; which; design |
Ladies and gentlemen, please fasten your seat belts. The plane __________.
| A．takes off | B．is taking off |
| C．has taken off | D．took off |
Do you know the reason __ he was late?
| A．of which | B．for that | C．for which | D．of that |
The teacher asked us_______ in deep water
| A．don’t swim | B．not swim | C．not swimming | D．not to swim |
It was in the street ______I met xiao zhang_____the fire took place
A.which/which B.that/that C where /that D why/that
____people _____were killed or injured reached more than 400,000
A.The number of,who B A great number of,who
C The number of, which D .A great number of,whom