______ in his book, he didn’t notice me when I entered the room.
| A．Devoted | B．Absorbed | C．Absorbing | D．Devoting |
The Japanese suffering from the worst natural disasters .
| A．are; ever since | B．are; of all time |
| C．is; ever since | D．is; of all time |
The experiment shows that proper amounts of exercise, if regularly, can improve
our health.
| A．being carried out | B．carrying out |
| C．carried out | D．to carry out |
The incident turned him into different person, even if he did not realize it at beginning.
| A．a; a | B．the; the | C．the; a | D．a; the |
For holidays, many people visit the Great Barrier Reef _______ the northeast coast of Australia, _______ has more than 600 islands.
| A．on, which | B．on, that | C．off, which | D．off, that |
After 1953 _______ people have succeeded in climbing the mountain.
| A．several hundred of | B．several hundreds | C．several hundreds of | D．several hundred |