[ Grammar for TOEFL ]
_____ heated by solar energy have special collectors on the roofs to trap sunlight.
A. A home is
B. Homes are
C. A home
D. Homes

Random Topics:
Past and Present Continuous tenseProgressive TenseAcademic VocabularyMust / must notAdverb Clause ConnectorPoetry VocabularyAdverbs, Prefixes, and SuffixesModals of ProhibitionVocabulary and PhrasesPunctuationsOther quiz:
Comparatives and Conjunctions › ViewHe plays soccer every weekend, __________ he’s not very good at it.
A. so
B. and
C. but
Grammar › View
I haven’t enjoyed myself so much for years.
A. It’s years since I have enjoyed myself so much.
B. It was years since I had enjoyed myself so much.
C. It has been years since I have enjoyed myself so much.
D. It’s years since I last enjoyed myself so much.
Tenses and Verbs › ViewFill in the blanks with am, is, are (present tense) and was, were (past tense) The cute cat ___ my pet animal.
A. am
B. is
C. are
D. was
E. were
Passive Voice with Modals › View
Broken glass ______ handled carefully to avoid injury.
A. can be
B. must be
C. may be
D. should be
