Grammar Quiz
[ Vocabulary ]

He then worked on peaceful applications of __________ that can substitute fossil fuel for a clean environment.

A. navigation

B. mantle

C. mutations

D. nuclear energy.

Select your answer:
A  B  C  D  E 


Random Topics:

Modals for Ability, Possibility and PermissionAuxiliary and Modal VerbsFirst Conditional & Future TensesModals and InversionPresent Simple and Past ContinuousTOEICVocabulary and IdiomsCountable - UncountablePast Tense, Recount Text, and Future TenseSuffixes and Tenses

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Past Tense › View

After she …………………………. her breakfast, she went to work.

A. was eating

B. had eaten

C. ate

Grammar › View

There are a lot of tickets left, so you__________pay for the tickets in advance.

A. mustn’t

B. won’t

C. should

D. don’t have to

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