[ Subject-Verb Agreement ]
The teachers ________________ our exams over the weekend.
A. Was preparing
B. Were preparing

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Present Simple vs Present ContinuousPast Simple TensePresent Tenses: Simple vs ContinuousPhrasal Verb Put & GoThere is, There are, Some, AnyCoordinate ConjunctionFirst Conditional SentenceCity PlacesPresent Simple & Present ContinuousModals of AdviceOther quiz:
Modal Verbs › ViewWhat ___ you ___ if you experience shortness of breath?
A. will/do
B. can/do
C. should/do
Grammar › View
When you are on duty (đang trực), your uniform ……………..at all times
A. must be worn
B. must wear
C. must have worn
D. must have been worn
Conditional Sentences › ViewIf we had checked the petrol before we started, we ____________here.
A. wouldn’t stop
B. wouldn’t have stopped
C. would have stopped
D. would stop
Grammar › View
How _________ you forget my birthday?
A. would
B. could
C. should
