She is said _____in the United States for four years before she came back to work in our company.
#95267
A
to study
B
to be studying
C
to have studied
D
studying
推荐题目
___ the room, the nurse found the tape-recorder ___. 
#95593
A
Entering; stealing
B
Entering; gone
C
To have entered; being stolen
D
Having entered; to be stolen
The power station keeps the villages ______ with electricity.
#97421
A
supplied
B
to supply
C
supplying
D
having supplied