求大神做十道名词从句31.It is strange _____ she have left without sayin

求大神做十道名词从句
31.It is strange _____ she have left without saying a word.
A.that B.what C.why D.how
32.It is very clear _____ our policy is a correct one.
A.what B.that C.why D.where
33._____ Mr Zhang said is quite right.
A.That B.When C.What D.Whether
34.It has been decided _____ he will be sent there.
A.if B.whether C.why D.that
35.It doesn' t matter _____he' s come back or not.
A.if B.whether C.that D.when
36.It's a great pity _____ we won't be able to finish the task on time.
A.when B.that C.why D.where
37.It happened _____ I wasn't there that day.
A.when B.why C.where D.that
38._____ you have done might do harm to other people.
A.What B.That C.Which D.The things
39._____ leaves the room last ought to turn oft the lights.
A.Anyone B.The person C.Whoever D.Who
40._____ the 2000 Olympic Games won't be held in Beijing is known to all.
A.Whether B.If C.Whenever D.That