Regular exercise (B5) such as jogging or swimming is good for your heart. It can also give you more energy to enjoy life. (B6) As a result of regular exercise, your body gets better at using oxygen. Exercise is also often thought to (B7) be an easy way of (B8) losing weight.
135 1 don’t
have to 2 mustn’t 3 don’t have to 4 mustn’t 5 don’t have to 6 have to 7 mustn’t
8 don’t have to 9 mustn’t 10 doesn’t have to
<span>1. </span>People must knock
before entering my room
<span>2. </span>People must say “Hello”
to me.
<span>3. </span>People must thank me
if I help them.
<span>4. </span>People must be quiet
in my room.
<span>5. </span>People mustn’t smoke.
<span>6. </span>People mustn’t litter.
<span>7. </span>People mustn’t make
noise.
<span>8. </span>People mustn’t bother
me.
<span>9. </span>People can use my
computer.
<span>10. </span>People can’t take
things away from my room.