--- I hear Warren _____ in a middle school.
--- What? I can’t imagine him _____ as a teacher.
| A．teaches; working | B．teaches; work |
| C．teach; to work | D．teach; working |
Generally speaking, if ______ strictly following the instructions, the electric bike is not as dangerous as reported.
| A．riding | B．being ridden | C．to be ridden | D．ridden |
On the National Day, up _____ into the air. Then the crowed cheered.
| A．the balloons went | B．went the balloons |
| C．go the balloons | D．did the balloons go |
The club, _____ 25 years ago, is holding a party for past and present members.
| A．founding | B．founded | C．being found | D．to have found |
We were playing near the lake______ the storm started.
| A．while | B．when | C．until | D．before |
The manager promised to keep us______ of how our business was going on.
| A．being informed | B．informed |
| C．informing | D．to be informed |