As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A.exposure | B.distribution | C.expansion | D.emission |
We should think carefully about ________ Mr. Needham said at the meeting.
A.that | B.what | C.which | D.X |
Jack was soon told ________ he did was not necessary.
A.why | B.that | C.how | D.why what |
The energy is ________ makes the cells able to do their work.
A.that | B.which | C.what | D.such |
It is well known _________ a person eats causes changes in the body.
A.that what | B.that | C.what | D.how |
________leaves the room last ought to turn off the lights.
A.Anyone | B.The person | C.Whoever | D.Who |