The plan for the new design occurred to Mr. Smith______on his work recently.
#95059
A
while concentrated
B
while concentrating
C
while he concentrated
D
while concentrating himself
推荐题目
---Is Mary still performing?----I’m afraid not. She is said_____ the stage already.
#93191
A
to have left
B
to leave
C
to have been left
D
to be left
(2009安徽合肥质检) She was so angry at all ______ I was doing ______ she walked out.
#95036
A
that; which
B
that; that
C
which; that
D
which; as to
our earth, or else it will be no longer fit for us to live on.
#92853
A
Protect
B
To protect
C
Protecting
D
Protected
Only when _____ possible to settle the problem how to get the machine repaired.
#93384
A
does the monitor come will it be
B
the monitor comes will it be
C
has the monitor come it will be
D
the monitor comes it will be
______ he returns to his native land.
#92482
A
It is long before since
B
It is before long that
C
It won’t be long before
D
It will be long after