[ Auxiliary Verbs, if, unless and Modal ]
We ______ turn off the lights when leaving a room to save energy.
A. need
B. need to
C. needs to

Random Topics:
Perfect TensePunctuationsConjunctions & Cohesive DevicesCoordinating ConjunctionsDirect and Indirect SpeechInfinitives and GerundsConjunctions in Complex SentencesQuestion tag and + - AgreementReported SpeechCan, Could, May, MightOther quiz:
Grammar › ViewA: “Thank you so much for helping.”
B: “ _____________.”
_
A. Cheers
B. Sleep well
C. Nothing much
D. Not at all. Don’t mention it.
Adverb Clauses › View
I borrowed four books on gardening the last time I _____ to the library.
A. go
B. went
C. had gone
D. have gone
Grammar › ViewShe agreed ____ with us to the tree-planting event.
A. come
B. to come
C. coming
D. to coming
Present Perfect Tense › View
Which one is correct ?
A. Since I won the lottery ,I have been to Bkk twice
B. Since I won the lottery ,I have gone to Bkk twice
