A lot of research and studies have shown that Trench oil, taken out from kitchen waste, _____

A lot of research and studies have shown that Trench oil, taken out from kitchen waste, ______ the increase of cancers.

#70720

results from

attends to

contributes to

devotes to

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The film is well worth _________.

#71524

seeing

to see

of seeing

seen

We should take ______of this opportunity to make a good impression on them.

#68803

care

advantage

charge

place

 She _______herself ______as an American.

#69996

passed ;off

passed; through

passed; on

passed; by

My decision _____ to be a good one .

#70321

to be proved

prove

proved

is proving

When he fell off the bike, he tried ____ but couldn't .

#81031

to have stood up

standing up

to stand up

having stood up

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