John said he'd been working in the office for an hour,___was

John said he'd been working in the office for an hour,___was true.
为什么不选and which而选and that
2.___the students must learn in a course is not provided in the classroom.
a.much of what b.many things c.so much d.all what为什么是A不是C或D
3.---would you like a cup of coffee or a glass of beer?
---____will do,but milk is___popular with me.
a.neither .not
b.both.more
c.either.the most
d.all.most 为什么选C不选B.