GWD-V-2两道题的疑问

参考答案是红色的那个, 但我不太明白, 答案肯定对吗? 谁能帮忙指点一\二,多谢!!!!

Q29:

Several financial officers of the company spoke on condition that they not be named in the press reports.

1. that they not be named
2. that their names will not be used
3. that their names are not used
4. of not having their names
5. of not naming them

   Answer: EC

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Q33:

When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

1. When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.
2. Whenever an active tooth is lost or worn down, many spare teeth lie in seemingly limitless reserve in the shark’s jaws, which are each ready to slide into the appropriate position.
3. Many spare teeth lie in seemingly limitless reserve in the shark’s jaws, each one of which are ready to slide into the appropriate position when an active tooth is lost or worn down.
4. The many spare teeth lying in seemingly limitless reserve in the shark’s jaws, each one of which is ready to slide into the appropriate position whenever an active tooth is lost or worn down.
5. In the shark’s jaws, many spare teeth lie in seemingly limitless reserve, each one ready to slide into the appropriate position whenever an active tooth is lost or worn down.

   Answer: EA

第一道题目考的是on condition that的用法，应该选择A,that从句使用动词原型。

第二个我也有疑问，希望大家来讨论。

For question 33, the answer should be E.

A)When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are (is) ready to slide into the appropriate position.

A is wrong for two reasons:

1) the "are" should be "is"

2) the logical meaning is awkward