Would you mind _____ me how _____ this physics problem

These teenagers don’t know much of the world yet; that’s why they are so easily  _____ .

October 15 th is my birthday, ________ I will never forget.

Do you spend a lot of time computer—No, but I spend much time doing my homework.

We may find that learning a foreign language doesn’t have to be ______ learning our native language.______, our native language is very difficult to learn.