The students are ______ a chemical law in the laboratory.
A: demonstrate
B: demonstrated
C: demonstrating
D: demonstrates
A: demonstrate
B: demonstrated
C: demonstrating
D: demonstrates
举一反三
- Joan has______ her life to the study of wild animals. A: dedicated B: dedicates C: demonstrates D: demonstrated
- Children should be encouraged to _______ their artistic talents both at home and in school. ( ) A: demon B: demonstrating C: demonstrate D: demand
- The teacher ______ the students clean the laboratory. A: asked B: told C: let D: wanted
- The teacher ______ how to do that chemical experiment in a detailed<br/>and careful way. A: denied B: demonstrated C: blurred D: bloomed
- The professor, together with several students, ______ working in the laboratory this time last week. A: is B: are C: was D: were