There are some police cars in front. What do you suppose ______
A. is the matter
B. is happened
C. is the wrong
D. the trouble is
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During the tourist season, there are many people wandering in this city to see the old castles ______ in the sixteenth century.
A. to be built
B. being built
C. having been built
D. built
Some 25,000 people were reported ______ in the ever recorded worst earthquake in lran, which occurred late this month.
A. were killed
B. to be killed
C. killing
D. to have been killed
This robot is supposed to save a lot of labor, but it remains a problem if it ______.
A. is
B. saves
C. does
D. has
Postage ______, the necklace will cost you at least 650 yuan.
A. including
B. included
C. include
D. to be included