I am sorry to have you ________ so long.
#95471
A
waited
B
to wait
C
waiting
D
to be waiting
推荐题目
On ________ our flight would be delayed, we made some other arrangements.
#95933
A
being informed
B
informed
C
informing
D
having informed
 How pleased the emperor was _____ what the cheat said!
#98002
A
hearing
B
heard
C
hear
D
to hear
 ____ by high mountains, the city is infamous for air pollution. 
#90478
A
Surrounding
B
To be surrounded
C
Surrounded
D
Having surrounded
When I came in, the children pretended ________ and no one even raised their eyes.
#92843
A
to read
B
have read
C
to be reading
D
to have been reading