Upon ______ the office, he saw the message on his desk. 
#96372
A
he arrived
B
arrived at
C
arriving at
D
arriving
推荐题目
How about the rest of us _____ a meeting after dinner?
#98014
A
will have
B
have
C
to have
D
having
Early peoples moved around, ______ the herds of animals.
#88577
A
having followed
B
followed
C
following
D
to follow
You'd better not have the lights _____ all day long.
#98324
A
burning
B
burned
C
to burn
D
being burnt