I don't like the way ________ you laugh at her.
| A．which | B．in which |
| C．by which | D．on which |
Charles Babbage is generally considered to _______ the first computer.
| A．to invent | B．inventing | C．to have invented | D．having invented |
----I have got a headache.
---- No wonder. You ________ in front of that computer too long.
| A．work | B．are working | C．worked | D．have been working |
The police ________ the lost child and tried to find his parents.
| A．took up | B．took in | C．took over | D．took after |
It’s very hard for Mary to work here, for ______ she does can’t satisfy her boss.
| A．what | B．whatever | C．which | D．whichever |
______ that he has wasted too much time, the boy is determined to stop playing video games.
| A．Realized | B．Realizing | C．To realize | D．Having realized |