_____ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
—What does the model plane look like? —Well, the wings of the plane are _____ of its body.
Passenger: Look out! There’s a kangaroo wandering on the road! Driver: ____ it! That was lucky. It can damage my car really badly.
—How is it that you know she’s got back from the UK? —She ____ when I came out of the house this morning.
A modern city has been set up in _______ was a wasteland ten years ago.
—He ought to have been warned of the danger. —____, but he wouldn’t listen to me.