All passengers are expected to fasten the seatbelts when the plane takes off and lands.
—What are you going to do this afternoon?—I am going to the theatre with some friends. The play________quite early, so we________to the park after that.
—Are you still busy?—Yes, I________my work, and it won't take long.
Eat ________cake you like and leave the others for ________comes in late.
You look tired, ________working indoors you should be out for a walk.
Extra warmth from sunlight can put an additional ________on the air-conditioning system.