Someone is knocking at the door. – It ______ be Tom. He is still in the school.

－David has made up his mind to continue with his studies.－_______ and _______.

We can save money _________ cooking our own meals instead of eating outside.

Would you mind if I turned on the radio and listened to some music—________. In fact, I also like to listen to music in my car.

In my opinion, more importance should be ________ to developing students’ abilities to solve problems.