A catalytic agent such platinum may be used so that ...

[ Grammar ]

A catalytic agent such platinum may be used so that the chemical reaction advances more rapidly.

A. such

B. so

C. advances

D. rapidly

Select your answer:

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Modal Verbs › View

She relies on Tom far too much. She doesn’t take into account the possibility that he ____ her; in spite of his willingness to do so.

A. may not want to help

B. may not have helped

C. can’t have helped

D. might not be able to help

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Genealogy is a …….. of history. It concerns family history, rather than the national or world history studied at school.

A. band

B. set

C. branch

D. series