______ a man knows what is not to be done, will he succeed in doing what is to be done.
#82357
A
What if
B
If only
C
As if
D
Only if
推荐题目
—Under no circumstances ________ the door to the Data Centre unlocked.—I promise I'll be more careful in future.
#79711
A
you need to leave
B
should you leave
C
need you leave
D
you should leave
Little ______ that we were watching his every move, so he seemed to be going his own way in this business.
#83861
A
he realized
B
he didn’t realize
C
didn’t he realize
D
did he realize
While ________ the dog, you should take care not to ________. Otherwise, it may be dangerous to strangers.
#80445
A
walking; get loose
B
walk; be loose
C
walking for; get it loose
D
training; get it run
---Do you have any idea what Hawk does all day?--- I know he spends at least as much time watching TV as he _______.
#79604
A
does writing
B
writes
C
is writing
D
spends on writing