We ______________ the train to arrive at 3:30.

If you drop litter on the street, you _________ the environment.

If you stop eating fatty foods, you can ______________ your weight.

We need to find a  __________ before the thunderstorm arrives.

The helicopter airlifted the __________ sailors to hospital.

I haven't travelled to Paris ___________ .

He looks really tired because he has been walking _______ hours.

Thy had finished dinner _____________ Mary arrived.

The rain had stopped _________ midnight.

_____________ has he been painting the house?