1.what if we meet with a situation_that_none of us are able to deal with
请问这句的结构是怎样的（主要是what if没理解）?
2.we were struck by the extent ___ which teachers' decisions served the interests of the school rather than those of the students.
a) to b) for c) in d) with
请问为什么用to呢?是哪个短语的搭配
3.He is quite worn out from years of hard work.He is not the man___ he was twenty years ago 答案为什么选that而不选whom
4.my grandpa give me a watch,which is made of gold,____i keep to this day
A and thus
b and
c so
d and which
为什么选择and which?
即将高考,