The element radium, ______ in the chemistry lab, gave off a blue light.
| A．discovering | B．to be discovered | C．to discover | D．discovered |
The children have been playing with my hat ---they’ve knocked it out of _____.
| A．shape | B．date | C．order | D．balance |
_____ of the danger in the street at night, she had to go home, with a friend _____ her.
| A．Warned; followed | B．Warned; following |
| C．Having warned; followed | D．Having warned; following |
IT course is taught in all levels of schools, _____ we have entered the information society and we must fit in with it.
| A．so | B．while | C．and | D．for |
― Why ______ you stay in the countryside, where it is not convenient to go shopping?
―But I’ve found it rather valuable for my health.
| A．can | B．must | C．may | D．shall |
This year my brother made a little progress in his study, but _____, it’s been an unlucky year for him.
| A．first of all | B．all in all | C．in all | D．as a consequence |