Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.

Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.

#4678

producing

having been produced

to be produced

produced

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.---Could I use your telephone? --- Yes, of course you  ________.

#4768

could

will

can

might

Thank you _____ visiting our company. We are looking forward to _____ you again.

#4577

to, seeing

for ,see

to, see

for, seeing

He imagines that people don’t like him, _____ they do.

#4889

and

then

but

Mark was a student at this university from 1999 to 2003, ____ ,  he studied very hard and was made Chairman of the Students' Union.

#4898

during which time

for which time

during whose time

by that time

.What a pity! I missed meeting my boss at the airport because my car was ______ in the traffic jam.

#4750

broken up

kept away

held up

kept up