The experiment shows that proper amounts of exercise, if regularly, can improve our health.
| A．being carried out | B．carried out |
| C．carrying out | D．to carry out |
Tom found out his parents weren’t well, so he went back to _____ for a while.
| A．take out | B．work out | C．help out | D．carry out |
He is ________ a friend to me; he is in a way my English teacher.
| A．no more than | B．more than | C．not more than | D．nothing but |
A large population in the world have no _________ to clean drinking water.
A. way D. road C. access D. space
—Amy, would you __ me to the airport to pick up Jim? I don’t won’t to go there alone.
—No problem.
| A．accompany | B．follow | C．replace | D．assist |
The teacher got very ________ when the boy refused to answer his question.
| A．annoying | B．being annoyed | C．to be annoyed | D．annoyed |