1、He proved himself a true gentleman and the beauty of his _

1、He proved himself a true gentleman and the beauty of his ______was seen at its best when he worked with others.
A、temper B、appearance C、talent D、character
这题的正确答案是D,为什么A不对?
2、No one in the department but Tom and I_____that the director
is gong to resign.
为什么中间要用knows而不能用know?
3、I am sorry I step outside for a smoke.I was very tired.
------There is no ____for this while you are on duty.
为什么这题要写用excuse而不用reason?
4、The warmth of _______sweater will of course be determined by the sort of wool.
A、the；the B、the；/ C、/；the D/；/
这题为什么要选B而不选C?
还有就是stationery是什么意思?

character性格 人格 temper 脾气.
nobody/no one 必须用单数,这里的主语是no one.
excuse借口 抽烟当然只能找借口,而不用堂而皇之的原因reason.
sweater,wool在这里都表示一类事务
stationery 文具