—I’d like to play football with you, but I have an important thing to attend to. —If you don’t go, _________.
The space station spins slowly in ________ space to imitate ________ pull of the earth’s gravity.
The old man was so angry and spoke so fast that none of his children understood ____ he said meant.
Listen to the two girls by the window. What language _____?
.Mary takes great ____ in learning pop music.
The computer system ____ suddenly while he was searching for information on the Internet.