[ Tenses ]
She ___ in the library since morning.
A. has studied
B. has been studying
C. studied
D. is studying

Random Topics:
DEGREE COMPARISONIrregular AdjectivesSynonym and AntonymThe Present Progressive TensePassive Voice & TensesArticlesSimple Present VS Present ContinuousLet & Be allowed toFirst & Second ConditionalFuture Simple TensesOther quiz:
Grammar › View__________work is this?
A. What
B. Whose
C. Which
D. Whom
Grammar › View
One of the most effective vegetable protein substitutes is the soybean_______used to manufacture imitation meat products.
A. which can be
B. it can be
C. who can be
D. can be
