[ Grammar ]
Today, I am happy. But yesterday, Yu … (tobe) upset
A. was
B. were
C. are
D. is
Select your answer:

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Verb Tenses › ViewHe has been rehearsing for the school play. (Present Perfect)
A. has been rehearsing
B. will be rehearsing
C. rehearsed
D. was rehearsing
Tenses › View
was and were + verb -ing is the auxiliary for…
A. present perfect
B. past simple
C. past continuous
D. present simple
