--What do you think made Mary so upset ? ---______  her new bicycle.
#93815
A
As she lost
B
Lost
C
Losing
D
Because of losing
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The question is not easy _____.
#97945
A
to answer
B
to be answered
C
answered
D
answering
 Entering the room, I found Mary _______ at the desk and _______ a letter.
#90588
A
seated; wrote
B
sitting; written
C
seating; writing
D
seated; writing
China first agreed     the six-party talks about North Korea nuclear weapons program.
#95850
A
to attend
B
to join
C
to participate in
D
to take a part