He devoted all the time _____ his research .
#92715
A
to do
B
doing
C
to doing
D
did
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To my surprise, he turned up in the room without ___.
#97748
A
noticed
B
being noticed
C
noticing
D
to be noticed
(2013·德州期末校际联考)________ an hour every day has made a considerable difference to my health.
#89554
A
Having walked
B
Walk
C
Walking
D
Walked
With all the books she needed _____, she left the library with satisfaction.
#90710
A
having borrowed
B
borrowed
C
borrowing
D
to be borrowed