[ Modal Verbs ]
You___________ the air pressure in your tires. You don’t want to get a flat tire on your trip.
A. ought to be checking
B. ought to check
C. ought to checked
D. ought to checking

Random Topics:
Phrases and ClausesGrammar - some / anyAdverb of MannerFuture Tenses and ModalsTransitionsThe First Conditional (if/unless)Possessive NounsPreposition and Preposition PhraseConditionals Type IModals, Phrasal Verbs, Gerunds and InfinitivesOther quiz:
Grammar › ViewLook! The cat ___ off the car.
A. is jumping
B. jump
C. to jump
D. jumping
Grammar › View
I would join the basketball team if I …….. more time.
A. have
B. had
C. would have
D. will have
