I didn’t quite follow him because he explained the theory _____that is too abstract for me.
Please tell Tom not to leave the classroom unless he ______ that all the lights ______.
The ticket ______ two people to the party.
When asked by the police, he said that he remembered ______ at the party, but not ______.
—The outing has been put off till next Friday due to the weather.—______
The wings of the plane, which stretched out for 80 feet, were ______ of its body.