[ Grammar ]
Which of the following is a preposition?
A. Quickly
B. Under
C. Can
D. Always

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Modals and PrepositionPRESENT SIMPLE - CHILDRENPresent and Past TensePresent and Future Tenses1st and 2nd ConditionalsFormal & Informal WordsWho am I?Conditional Sentence Type 2 and Type 3Grammar Present Perfect (ever never)Grammar - Nouns, Verbs, and AdjectivesOther quiz:
Tenses › ViewPast Perfect Continuous: By noon, they ________ the marathon for three hours.
A. run
B. ran
C. running
D. had been running
Grammar › View
My grandmother prefers ________ science fiction books.
A. Reading
B. to read
C. readed
D. reads