QUESTION
- What a tooth for fruit a monkey has.
- Looking at the wrong answers, Shahzar clenched his tooth.
- Repairs were made to the gearing, including the replacement of several hundred cog teeth.
- He had a gold tooth.
ANSWER
Explanation:
2 should be "Clenched his teeth" instead, which is a general idiom as well.
Other Options:
1 - Tooth for fruit means an appetite or liking for a particular thing.
3 - A Cod teeth is an example of a projecting part on a tool or other instrument.
4 - A gold tooth would be a tooth that is made of gold.