请各位同手给小妹详细讲细一下!
1.Possibly this person died without anyone_____where the coins were hidden.
A.to know
B.knowing
C.know
D.known

2.The scientists _____in my last letter will come to visit our school.
A.refering
B.referred to
C.I referred to
D.whom being referred to

3.This is the very book____I~ve beenlooking for?
A.that
B.which
C.this
D.it

4.___was expected.the actress performed exctllently.
A.AS
B.That
C.Whict
D.It

5.There is none of us____wishes to help you.
A.but
B.howere
C.that
D.escaped

6.Anyone ____anything about the accident is asked to communicate with New Scotland Yard.
A.knowing
B.knows
C.they know
D.who have known

1.b（分词代替一定语从句anyone who knows）
2.c（whom I referred to,whom可省略）
3.a（定语从句中，先行词前出现very,only,no,none,any,anyone....一定用that）
4.a（As is known,As is ....固定句式，后面应该是逗号，你打错了吧，如果用it is ....后面句子前加一连词如and,but）
5.c（同3）
6.a（同1，分词代替一定语从句anyone knowing=anyone who konws）