Right or wrong?

I didn't worry about my test. Correct. Incorrect.

Mount Everest is the taller mountain in the world. Correct. Incorrect.

The classes will begin on Monday. Correct. Incorrect.

Writing in English is more harder than Reading. Correct. Incorrect.

Last summer I visit Turkey. Correct. Incorrect.

In my town we have lots of parks. Correct. Incorrect.

My mum teached me how to swim when I was young. Correct. Incorrect.

People in my country is welcoming and friendly. Correct. Incorrect.

I really enjoy to play football with friends. Correct. Incorrect.

I think that starting a school science magazine is an excellent idea!. Correct. Incorrect.

On the one hand, small cameras are comfortable. In the other hand, larger ones take better photos. Correct. Incorrect.

I can't go out because I haven't finished my homework yet. Correct. Incorrect.

My friend like listening to songs in English. Correct. Incorrect.

Let me make an example. Correct. Incorrect.

It was a very challenging situation. Correct. Incorrect.

I was 6 years old when I started learning English. Correct. Incorrect.

My friend recommended me to buy this car. Correct. Incorrect.

Can you explain me how this app works?. Correct. Incorrect.

The balcony is all wet. It must have rained last night. Correct. Incorrect.

Today I prefer to stay at home because it is raining. Correct. Incorrect.