One theory, ________ suggested by Harvard University, is that humans began cooking their food, thereby releasing nutrients locked in the raw food and reducing the time needed to chew it.
A.which | B.as |
C.that | D.what |
Tell him ______ the light.
A.to turn | B.not to turn on | C.to not turn | D.not to turn |
It took us more than two hours _______ the dinner.
A.prepare | B.preparing | C.to prepare | D.to be prepared |
We felt the earth _______.
A.move | B.moveing | C.to move | D.be moved |
The students were made ______ the text ten times.
A.read | B.reading | C.to read | D.to be read |
The chair looks rather hard _______, but in fact it is very comfortable.
A.to sit | B.to sit on | C.sitting | D.sit |