.________ that he had wasted a lot of time, Tom decided to work hard on his study.
#93855
A
Realizing
B
To realize
C
Realized
D
Having been realized
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I got to the office earlier that day,   the 7:30 train from Paddington
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A
caught
B
to have caught
C
to catch
D
having caught
 I was deep in thought, so I didn't notice _____.
#98297
A
him to come in
B
him come in
C
he come in
D
him coming in