__ mre attention, the trees could have grown better.
A. given
B. to give
C. giving
D. have given
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The secretary worked late into the night, __ a long speech for the president.
A. to prepare
B. preparing
C. prepare
D. was preparing
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
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