Unless

I ________ (go) out unless it rains.

• will go

• go

• goes

• went

Sharks will be extinct unless people ______ (stop) killing them.

• stops

• stop

• stopped

• stopping

Unless you ________ (work) hard, you will fail the exam.

• work

• working

• will work

• worked

I ________ (go) to your party unless I am busy.

• goes

• go

• will go

• will not go

Dophins __________ (have ) no places to live unless people stop turing sea into land.

• have

• will have

• has

• having

Pandas will have no food unless people ________ (stop) cutting down bamboo forests.

• stops

• stopped

• will stop

• stop

People keep dumping rubbish into the sea. _________ dolphins become ill and die.

• unless

• Therefore

• because

• If

Elephants will become extinct _______ people stop buying ivory products.

• Therefore

• unless

• if

• so

Dolphins will be our friends __________ we protect them.

• if

• unless

• Therefore

• so

Dolphins will have no fish to eat __________ people stop fishing in the sea.

• because

• if

• therefore

• unless