[ Grammar ]
_______ you know Mars ?
A. Are
B. Is
C. Do
D. Does
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Infinitives and Gerunds › View_____ in virtual class causes me stress.
A. Being
B. Be
Grammar › View
My telephone is out of order, but ________ is working.
A. your
B. our
C. his
D. their
Grammar › ViewThey swim every day. Look! They________.
A. a. swims
B. b. swam
C. c. is swimming
D. d. are swimming
Tenses and Articles › View
It took me _____ hour to finish the homework.
A. a
B. an
C. the
D. –