[ Modal Verbs ]
Carl ______ water the flowers since his mom will do it.
A. can’t
B. doesn’t have to
C. mustn’t
D. don’t have to

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Present/Past/Past ParticpleSubordinating Conjunctions and ClausesMixed Present TensesPassive with ModalsPresent Simple: affirmative, negative, interrogativePrepositionsProgressive TensePast simple vs Present perfectNouns, Articles, DeterminersModals and Modal PerfectsOther quiz:
Grammar › ViewA common time adverb in present continuous is ” _________.”
A. still
B. before
C. daily
D. later
Modal Verbs › View
You ___ forget your keys; it’s essential to lock the door.
A. can
B. mustn’t
C. don’t have to
D. should