[ Grammar ]
What tense expresses an action of the subordinate clause which serves as a background for an action of the principal clause.
A. past simple
B. past continuous
C. past perfect
D. past perfect continuous
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I am sure that this is my uncle’s mobile phone. It is ___________.
A. hers
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Which of the following is a common noun?
A. Majapahit
B. Eiffle Tower
C. National Geographic
D. postcard