We are living in an age many things are done on computer．
A．which B．that C．whose D．when
Although knocked down by a car, he managed to ______ to his feet.
A．stand B．rise C．run D．struggle
The sun heats the earth, ___________ is very important to living things.
A．that B．what C．which D．where
I will visit you if Father ______ me.
A．let B．lets C．is letting D．will let
The policeman warned the drive ________ so carelessly.
A．never to drive B．to never drive C．to not drive D．doesn’t drive
— Why does she always ask you for help?
— There is no one else _______, is there?
A．who to turn to B．for her to turn
C．for whom to turn D．she can turn to
