"It is" Adj + Infinitive

It's a good idea ________ some basic phrases, when traveling to another country.

• -

• to learn

• learning

• learn

___ to buy a book with some helpful expressions.

• It’s helpful

• Its helpful

• It helpful

It's impossible ___ what will happen.

• to guess

• guessing

• guess

• to guessing

It's unreasonable ___ to expect everyone else to speak our language.

• for we

• to us

• for us

• to we

It's good manners ___ "please" and "thank you".

• say

• to say

• for say

• saying

Sometimes, it's hard ___ a small travel map.

• to us to find

• for us find

• we find

• for us to find

It's surprising see that it is so light and clear.

• Correct

• Incorrect

It's hard for me understanding how it works.

• Correct

• Incorrect

It is exciting to see such an interesting design.

• Correct

• Incorrect

It's unfortunate it shows finger prints.

• Correct

• Incorrect