My English teacher visited Australialast summer.—Which city did he visit—

This is a key. It’s ___________blue key.

As we know it’s difficult to live in a foreign country.—________ if you can’t understand the language there.

If our government ________ pay attention to the safety of food, our health ________ in danger.

I hear your teacher ________ to Japan once. ––Yes, he _______ there last year.