------ Henry doesn’t seem like the same person.------ ________ so much in the war has made him more thoughtful.
#90954
A
For him to see
B
His seeing
C
Having seen
D
To have seen
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Robert is said          abroad, but I don’t know in which country he is.
#98083
A
have been studying
B
to have been studying
C
have studied
D
to have studied