[ Grammar ]
Carbon dioxide is produced in huge amounts when_______ are burned.
A. greenhouse gas
B. deforestation
C. power plant
D. fossil fuels

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Tenses and ArticlesFuture Tenses and ModalsVerb FormsConditionals III - Mixed 1st, 2nd & 3rd ConditionalsGerund and InfinitivesGrammar ModalsUnscramble SentenceFuture PlansGrammar: Have toModal Verbs and PermissionOther quiz:
Some vs. Any › ViewDo you have ………….. brothers or sisters ?
A. Some
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What ___ you ___ if you have a stomach ache?
A. will/do
B. can/do
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Grammar › ViewYou have to make a hotel ______ reservation in advance.
A. expensive
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My classmates ____ our teacher postpones the exam.
A. wish
B. hope
