—Where is David?
—He’s doing a(n) ________in the lab. He wants to find out why the chemicals can burn in sunny days.
A.experiment B.preparation C.creation
— It seems that Tina is still angry with you.
—I think she won’t be happy________I agree with her.
A.if B.since C.unless
— Don’t think too much about your clothes. As a student, you should study hard.
—Well, I think________also plays an important part in success.
A.decision B.appearance C.intelligence
— Look out! There is water on the floor.
—Who made a mess here? I guess it must be little Tom.
A.Get down B.Be careful C.Thank goodness
— Usually, most children are closer to their mothers than fathers.
—That’s true. So mothers play a very important part in their children’s lives.
A.Above all B.In fact C.In general
—There was a worried expression on your face. Is everything OK?
—Oh, I am just worrying about the coming exam.
A.look B.gesture C.feeling
