The stronger the ______ is, the more quickly a person will learn a foreign language. That is to say, it is up to whether he has an interest in the foreign language.
Air and the sun's rays create much distortion, and whatever tends to _____ their influence is useful to the astronomer.
The filling station _____ because there were too many others on the street.
His job at the hospital did not pay much, so he found another _____.
At first Bob was puzzled by Virginia s waving, but then it _____ his mind that she was trying to tell him something.
Jim isn't _____, but he did badly in the final exams last semester.