Carbon dioxide, which makes a ______ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer.
| A．difference | B．comparison | C．connection | D．barrier |
It was raining heavily. Little Mary felt cold, so she stood ____ to her mother.
| A．close | B．closely | C．closed | D．closing |
She can speak _______ in front of Mack, but she can’t eat ______ in his restaurant.
| A．free, free | B．free, freely | C．freely, free | D．freely, freely |
He didn’t understand the _______ question, so there was a ______ expression on his face.
| A．puzzling; puzzled | B．puzzling; puzzling |
| C．puzzled; puzzled | D．puzzled; puzzling |
—Which team is _______ to win the game?
—I don’t know, but I’ve found _______ for ours to win.
| A．probable; it unlikely | B．likely; it possible |
| C．possible; it possible | D．likely; it possibly |
—Did you wash your new suit in hot water?
—Of course not. I am not ______ foolish.
| A．very | B．that | C．very much | D．too |