Unlike watching television, which requires no thought process, reading is an active learning experience that will keep your mind ________.
A. casual B. skeptical
C. sharp D. accurate
—I heard Mr Morgan would be here at 4:00 pm next Thursday.
—No, he _______ at that time.
A. was boarding B. would be boarding
C. is boarding D. will be boarding
Considerable evidence has been found over the years ________lack of exercise is connected with increased risk of cancer.
A. whether B. that
C. why D. how
I kept ______ the incident, asking myself again and again how it could have happened.
A. chewing on B. sticking to
C. referring to D. relying on
Not everybody agrees to the plan. Some support it, while I am one of opposed to it.
A. who B. those who
C. which D. those
The river ________ at least 50 meters in width, but the ten-year-old boy can swim across it within minutes.
A. is measured B. measures
C. is measuring D. is being measured