(2013·天津新华中学二次月考)________ several times,he still couldn't understand how to operate the machine.
#89556
A
Telling
B
Having told
C
To be told  
D
Having been told
推荐题目
The twins,______at birth,do not know each other .
#98499
A
separated
B
being separated
C
having separated
D
having been separated
No one was permitted ______ the empty house without his permission. 
#96238
A
entering
B
to enter
C
entering into
D
to enter into
______ a mile in the fastest time while doing gymnastically correct lunges is yet another event______ Ashrita is outstanding.
#88576
A
Covering; in which
B
Covering; which
C
Having covered; in which
D
To cover; that