He is a student at Oxford University, _________ a degree in computer science.
#93082
A
to have studied
B
studied
C
studying
D
to be studying
推荐题目
We’ve come to help. Which room do you want ______? 
#97422
A
cleaning
B
cleaned
C
to clean
D
to be cleaned
The child, who was believed _______ by a tiger, was found in a forest. 
#92366
A
to be killed
B
having killed
C
to have been killed
D
to be killing