Question

1. It’s a good idea for you to learn about the undersea world.

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2. He has not checked the seal’s teeth yet.

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Answer 1

1. You should learn about the undersea world.

2. The seal’s teeth have not been checked yet.

Answer 2

1. It’s a good idea for you to learn about the undersea world.

=> You should learn more about the undersea world because is a good idea for you

2. He has not checked the seal’s teeth yet.

=> The seal's teeth haven't yet been examined by him