By asking a series of questions in Paragraph 5, the author mainly intends to indicate that
A. memory of the past is very important to people
B. found photographs allow people to think freely
C. the back-story of found photographs is puzzling
D. the real value of found photographs is questionable
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—What did your parents think about your decision? —They always let me do ______ I think I
A. when
B. that
C. how
D. what
The police are searching for a boy who is reported to ______ since the flood hit the area
A. be missing
B. have been missing
C. get lost
D. have got lost
How will we feel if we let the clerk know her mistake?
A. We'i1 be very excited.
B. We'll feel unfortunate.
C. We'll have a sense of honor.
D. We'll feel sorry for the clerk.
Mr. Hall understands that ______ math has always been easy for him, it is not easy for the
A. unless
B. since
C. although
D. when