Some students are so         that they often make mistakes in their homework.
A. careful         B. carefully           C. careless

Sally used to be ______, but now she enjoys meeting and talking to new friends.
A. shy                 B. active                 C. outgoing

In fact, most people in some developed countries are ___ than they were two years ago because of the global financial crisis.

Mr. Brent is a man with _______ personality—he never seems tired with so much work to do every day.

From the boy’s _____look, we can see the _____noise ______ him.

Dave is always            , never making a decision about anything in a hurry.

What a ______ smell! How long was it since you last cleaned the house?

We can’t get the machine to run. There must be ______ with it.

―Are you satisfied with what she has done?    ―Not a little. It can’t be ________.

Studies show that Americans chat on their phones for more than five hours a month, _____ Europeans.