[ Grammar ]
(your friends / sing) ______________________________ for the elderly people every Sunday?
A. Do your friends sing
B. Does your friends sing
C. Have your friends sung
D. Did your friends sing

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Present/Past/Past ParticpleModals of AdvisabilityIn/On/At + TimeWill or Going toPersuasive TextIndefinite and Intensive NounModal and Auxiliary VerbsModal Verb, Passive VoiceConjunctions in Complex SentencesPresent Simple & Present Continuous TensesOther quiz:
Grammar › ViewJohn and Mary / not / skate
A. John and Mary isn’t skating.
B. John and Mary aren’t skating.
C. John and Mary aren’t skateing.
Grammar › View
We should protect the environment _____ it is being seriously damaged.
A. because
B. although
C. so
D. but
Vocabulary & Grammar › ViewUnselfishness is the very _______ essence of friendship.
A. romantic part
B. important part
C. difficult part
D. interesting part
Grammar › View
He was not shy. He helped _____ to the food which was on the table.
A. herself
B. himself
C. yourself
D. yourselves
