p102
71.If city noiss are not kept from increasing,people____shout to be heard even at the dinner table 20 years from now.
A.have to B.will have to
我选B,答案A

84.The old man had a letter from his daughter_____to him.
A.read B.written
我选B，答案A

p104
90.It's said that one in ten_____to take part in this contest.
A.is expecting B.expected
这题就更诡异了，印了两个一样的选项，我猜想应该是这两个选项。到底是这些人想参加还是被期望参加？

补充一些及有部分不同看法。

1。 “84.The old man had a letter from his daughter_____to him. A.read B.written” “84为什么不可以是written to him作定语修饰a letter from his daughter？”

再选written和题意有重复。had a letter from his daughter 很明显是a letter written by his daughter to him. 所以用written 的话显得重复。

这题考的是 have s.th. done 的用法。“让（使役）某人做某事”的意思。

2。 90.It's said that one in ten_____to take part in this contest.
A.is expecting B.expected

我认为这题选 A is expecting...期盼着做什么什么。。用主动语态。不要被前面的“it's said”迷惑。翻译为“据说10个人里面就有一个希望能参加这个音乐会。” 另例：

I am expecting he will say that to me.

当然，expect也有用被动的时候、场合，但这题不是。这题是这些人自己想参加。expect被动例句：

we are expected to be there by 3. 我们要在3点前到那儿。
（我们是被外界所要求（或是规则规定或是别人告诉你、要你这样，总之这里是被动意思）在3点前到）

OK, 现在有点空，再来看看city noise那题，我帮你询问、明确了下，确实是应该用 will have to. 看来是答案印错了。另外要指出city noise是单数概念，用are 不对，应用 is not kept from....