[ General Quiz ]
“_______ a clean and a conducive school environment is everyone’s responsibility,’ our principal reminded us.
A. Maintain
B. Maintains
C. Maintained
D. Maintaining

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Prepositions › ViewThe boy needs to concentrate _____ his studies. His grades are falling.
A. In
B. On
C. About
D. Over
Grammar › View
The ballerina has been _____________ since morning.
A. dance
B. dances
C. danced
D. dancing
Gerund and To Infinitive › ViewEnjoy, Fancy, Can’t stand, Imagine are followed by….?
A. to Infinitive
B. gerund
C. both can be used
Grammar › View
having an obsessive-compulsive personality, Laura likes to have everything in (its, their) place before she goes to sleep at night.
A. its
B. their