1.whatifwemeetwithasituation_that_noneofusareabletodealwith请问这句的结构是怎样的（主要是whatif没理解）?2.wewerestruckbytheextent___whichteachers'decisionsservedtheinterestsoftheschoolratherthanthose

　　1.whatifwemeetwithasituation_that_noneofusareabletodealwith

　　请问这句的结构是怎样的（主要是whatif没理解）?

　　2.wewerestruckbytheextent___whichteachers'decisionsservedtheinterestsoftheschoolratherthanthoseofthestudents.

　　a)tob)forc)ind)with

　　请问为什么用to呢?是哪个短语的搭配

　　3.Heisquitewornoutfromyearsofhardwork.Heisnottheman___hewastwentyyearsago答案为什么选that而不选whom

　　4.mygrandpagivemeawatch,whichismadeofgold,____ikeeptothisday

　　Aandthus

　　band

　　cso

　　dandwhich

　　为什么选择andwhich?

　　即将高考,