(2013·天津新华中学二次月考)________ several times,
题型:选择题
问题:
(2013·天津新华中学二次月考)________ several times,he still couldn't understand how to operate the machine.
A.Telling
B.Having told
C.To be told
D.Having been told
(2013·天津新华中学二次月考)________ several times,he still couldn't understand how to operate the machine.
A.Telling
B.Having told
C.To be told
D.Having been told