请教两道英语选择题：the children are

题目

请教两道英语选择题：the children are
请教两道英语选择题：the children are not allowed in until the school bell rings,（ ）the weather.
a whichever b whatever c however d wherever
( )he has missed his chance,he"ll have to wait for the next round.
a now that b even though c so that d as long as
不要只讲答案，请讲一下几个词汇的区别和用法。
还有问题： my pleasure 和 with pleasure 和 it"s a pleasure 的意思是什么？

答案

B
whatever 不管怎样 however 怎样.wherever 不管哪里
不管天气怎样,学生在铃响之前不允许进入
A
now that,既然由于,even thought 尽管 so that 因此,以至于,以便as long as只要,如果
很明显,选A:由于他失去了机会,他不得不等下一轮了.