[ Perfect Tenses ]
She answered all of the questions in the exam because she ____________ very well.
A. was studied
B. had studied
C. has been studied
D. have studied

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Subject Verb Agreement › ViewThe students in my school _____________science when it involves a field trip to the zoo.
A. enjoy
B. enjoys
Tenses › View
He ________ for twenty years before he retired last year
A. had been teaching
B. has taught
C. was teaching
D. has been teaching
Some vs. Any › ViewHave you got _______ potatoes?
A. Any
B. Some
C. A
D. An
Grammar › View
The Museum __________ open on Mondays.
A. don’t
B. doesn’t
