Grammar verbs for rules

$9$

VERBS FOR RULES

Each team must have five people and a shopping cart.

They can't change the wheels.

All the teams have to start and finish at the same place.

They don't have to run on the same roads.

They mustn't finish without the cart!

Players can pick up the ball and run with it$.$

For further information and practice, see page $158.$

$7$ Look at the sentences in the grammar box. Complete the explanations $(a-d)$ with the verbs in bold in the grammar box.

a We use $$ or $$ when the rules say it's obligatory.

b We use $$ when it's allowed in the rules.

c We use $$ when something is not obligatory but is allowed by the rules.

d We use $$ or isn't allowed in the rules. when it