Don’t respond to any e-mails    personal information, no matter how official they look. 
#94418
A
requested
B
request
C
requesting
D
to be requested
推荐题目
____several times,but unfortunately,the boy still couldn’t smooth away the problem on his own.
#98193
A
Having been explained
B
The problem having been explained
C
The problem had been explained
D
Although the problem had been explained
The school required ____.
#98657
A
rebuilding
B
to be re uilt
C
to have rebuilt
D
rebuilt