The number of historic buildings which ________ has reached a surprising figure that we must be aware of.
#99554
A
has been pulled down
B
had been pulled down
C
is being pulled down
D
have been pulled down
推荐题目
— Did you see the manager in his office? —Yes, he ______ by the journalist from Chongqing Evening.
#103268
A
has been interviewed
B
is being interviewed
C
had been interviewed
D
was being interviewed
—Has Tom finished his task yet?—I’m not sure. But he _____ on it last week
#100481
A
was working
B
has been working
C
worked
D
had been working
______ __ a reply, he decided to send another e-mail. 
#101796
A
Not receiving
B
Receiving not
C
Not having received
D
Having not received