72-1.____C__ he said so made us very happy.72-2.___B___ he said made us very happy.A.Which \x05B.What \x05C.That \x05D.it74-1.They don’t know __B__ he will come unless told.74-2.They don’t know ___C___ he will come until told.A.that \x05B.whether

72-1.____C__ he said so made us very happy.72-2.___B___ he said made us very happy.A.Which \x05B.What \x05C.That \x05D.it74-1.They don’t know __B__ he will come unless told.74-2.They don’t know ___C___ he will come until told.A.that \x05B.whether
72-1.____C__ he said so made us very happy.
72-2.___B___ he said made us very happy.
A.Which \x05B.What \x05C.That \x05D.it
74-1.They don’t know __B__ he will come unless told.
74-2.They don’t know ___C___ he will come until told.
A.that \x05B.whether \x05C.how long \x05D.if or not
75-1.He asked us the question D___C___ the film was worth seeing.
75-2.He made the suggestion ___C___the meeting should be put off.
A.when \x05B.where \x05C.that \x05D.whether
79-1.A___C___ we’ll have a meeting tomorrow has been decided.
79-2.___C___ we’ll have a meeting tomorrow has not been decided.
A.That \x05B.If \x05C.Whether \x05D.what
81-1.Father promised _C_B__ I studied harder he would take me to Beijing next summer.
81-2.Father promised ___A__ he would take me to Beijing next summer if I studied harder.
A.that \x05B.if \x05C.that if \x05D.if that
82-1.C__A___ makes me feel sad seeing you living all alone.
82-2.____D__ makes me feel sad is seeing you living all alone.
A.That \x05B.This \x05C.It \x05D.What
83-1.C_B____Japan lies east of China is known to all.
83-2.I don’t know __B__ has happened to him now.
A.if \x05B.what \x05C.that \x05D.where

72-1.____C__ he said so made us very happy.72-2.___B___ he said made us very happy.A.Which \x05B.What \x05C.That \x05D.it74-1.They don’t know __B__ he will come unless told.74-2.They don’t know ___C___ he will come until told.A.that \x05B.whether
72-1. C
72-2. B
两句都采用从句做主语即主语从句,第一个从句中said后面有so,句子不缺成分,所以用that引导即可；而第二个从句中said后一面没有宾语,所以用what代替并引导从句.
74-1. B
74-2. A（你给的答案有误）
第一句：如果没有被告知的话,他们不知道他是否会来.
第二句：直到被告知的时候,他们才知道他会来.
come是瞬间性动词,不能与how long连用,排除C；
if和or not一般不能连用,排除D；
75-1. D
后面是question的同位语从句,既然是question”问题”,所以从句不可能是陈述句,排除C；
AB句意均明显不通,用whether（不能用If引导）“是否”引导最佳.
75-2. C
同样,后面是suggestion的同位语从句,既然是suggestion”建议”,所以从句是一个陈述句,用that引导.
79-1. A
主语从句,既然它已经被决定了（has been decided）,所以主句是一个确定性的陈述句,用that引导.
79-2. C
同理,既然它还没有被决定（has not been decided）,所以主语从句是一个未确定（有疑问）,所以用whether“是否”引导.
if不能用于引导主语从句,排除B；
what虽然可以引导主语从句,但是这两题中的主语从句都不缺少what成分,排除.
81-1. C
promised后面是一个以that引导的宾语从句,该宾语从句又含有一个if引导的条件状语从句,且该主语从句放于句前,所以that和if都不能省略,以免混淆.
81-2. A
此题同上,但是if从句放在句尾,所以只需要一个that即可.
82-1. C
seeing you living all alone为真正主语,前面是it为形式主语,that不能充当形式主语.
82-2. D
___makes me feel sad为主语从句,该从句缺少主语,所以用what引导.
83-1. C
___Japan lies east of China为主语从句,不缺少任何成分,所以用that引导.
83-2. B
__ has happened to him now为know的宾语从句,该从句缺少表sth的主语,所以用what引导.

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