Sugar______naturally in fruit, so eating fruit can add to the contents of sugar inside our body.
| A．happens | B．occurs | C．appears | D．forms |
Only ______according to the directions can the medicine be quite effective.
| A．taking | B．taken | C．being taken | D．having been taken |
--- I promise her daughter ______ get a nice present on her birthday.
---Will it be a big surprise to her?
| A．should | B．must | C．would | D．shall |
Before the final examination, many students have shown ______of tension. Some have trouble in sleeping while others have lost their appetite.
| A．anxiety | B．marks | C．signs | D．remarks |
If you read fast every day, you ______ improve your English.
| A．are bound to | B．are bounded to | C．bound | D．bound to |
They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.
| A．would | B．could | C．were able to | D．had to |