Generally speaking, according to the directions, the drug has no side effect.
| A．when taking | B．when taken |
| C．when to take | D．when to be taken |
The factory ______ I am going to is the place ______ my mother used to work many years ago.
| A．where, where | B．where, which |
| C．which, where | D．that, which |
Who can pwhat life will be like in the future?
---Would you mind if I turned on the TV?
---Not at all. _______
| A．Go ahead! | B．You’ve got it. |
| C．It’s your turn. | D．Keep the noise down. |
I ______ go to the cinema, but I haven’t had time since I entered senior high school.
| A．used to | B．was used to |
| C．happened to | D．was able to |
_______, ice can be changed into water and water can be changed into steam.
| A．Heat | B．Heating |
| C．To heat | D．Heated |