– Why are you going to do exercise? -Because it is a good way to _______ and make me relax.A. keep fitB. keep cleanC. keep excited
Bob used to ________in the countryside . But now he is used to _________in the big city .
---You’d better not eat too much salt. It's bad for your health. ---- _______________.
Yesterday, they talked about something important _______ the phone.
His father told him ________ his best friend to dinner this Sunday.
The more you smile, the ________ you will feel.