The teacher ____ us how to do the experiment when the fire bell rang.
A: was showing
B: shown
C: showed
A: was showing
B: shown
C: showed
举一反三
- The bell rang ______ the teacher was explaining the experiment to the students. A: until B: while C: after
- Do you mind ______ me how to use the new projecto A: showing B: to show C: showed
- My mom was cooking _____ the bell rang. A: when B: where C: why
- ______ had I finished the test ______ the bell rang. A: Never ... then B: No sooner ... then C: Hardly ... when D: Seldom ... when
- The teacher ______ how to do that chemical experiment in a detailed<br/>and careful way. A: denied B: demonstrated C: blurred D: bloomed