1．As the old saying goes, a wise man knows his own ________(limit)．
[答案] limitations
2．Some aspects of a pilot's job can be boring, and pilots often have to work at ________(convenient) hours.
[答案] inconvenient
3．They will stand by you even ________ you don't succeed.
[答案] though/if
4．The door is low, so ________(mind) your head when you go in.
[答案] mind
5．Fortunately, I jumped back in time ________(avoid) being knocked down.
[答案] to avoid
