The secretary worked late into the night, __ a long speech for the president.
A. to prepare
B. preparing
C. prepare
D. was preparing
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He's upstairs __ a letter.
A. writes
B. is writing
C. write
D. writing
__ a reply, he dicided to write again.
A. not receiving
B. receiving not
C. not having received
D. having not received
The missing boy was seen __ near the river.
A. playing
B. to be playing
C. play
D. played
When I got off the bus, I found my pocket __ and the money gone.
A. picked
B. stolen
C. missing
D. lost
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