At that time we lived in houses which ___________ old, cold and unsafe.
#42600
A
are
B
were
C
is
D
was
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Friends are those_____ make you smile, always open their hearts to you and encourage you to succeed.
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which
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what
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China is trying to find ways to take care of the children parents have left their homes to work in cities.
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that
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who
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The English-Chinese dictionary ____my father bought for me many years ago is so useful.
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whose
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that
D
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