[ Modals of Obligation and Permission ]
I _____ forget to take my library books back on the way home.
A. mustn’t
B. don’t have to
C. have to

Random Topics:
Modals of ProbabilityArticles & Compound NounsActive and Passive Gerunds and InfinitivesSimple Present vs Present ProgresivePresent Simple TenseInterjection & Prepositional PhrasesModals of Obligation and PermissionIn/On/At + TimeGrammar: is/are/was/wereWas & Were QuestionsOther quiz:
Vocabulary & Grammar › ViewOn the farm, uncle Duong showed us how to ________ cucumbers.
A. plough
B. produce
C. pick
D. put up
Participle Adjectives › View
My brother was very __________ that he only got a D in his exam.
A. disappointed
B. disappointing
Grammar › View“When did you buy that bike?”- he asked me.
He asked me…
A. when I did buy that bike.
B. when I bought this bike.
C. when I had bought the bike.
D. when had I bought the bike.
Prepositions › View
Your father is very kind________ David
A. of
B. to
C. for
D. in
