David wants to cross the road. He_______stop and look both ways first.
should
Harry's got an important exam tomorrow. He________study this afternoo.
should
It's a sunny day. You_____________wear a hat.
should
We________________catch tigers.
shouldn't
We____________leave our rubbish after a picnic.
shouldn't
We_________keep our rivers and lakes clean.
should
Giant pandas/cats are endagered today.
Giant Pandas
Zebras have got striped_________________.
bodies
This butterfly have got beautiful______________________.
spots
He's got a headache. He_______________watch TV.
shouldn't