Physics _______ an easy subject for me when I was young. I usually got high marks then.
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A
is
B
are
C
was
D
were
推荐题目
--Why does the lake smell terrible?    ---Because large quantities of water ______.
#85773
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
You are not supposed to get off the bus ________ it stops.
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A
though
B
while
C
until
D
because