His grandfather is still ________ and lively, full of energy.
举一反三
- In the future, China's energy consumption will still be dominated by fossil energy, in which coal is the main energy.
- My grandfather still plays tennis now and then, ______ he's in his ninties.
- The poor driver was still ________ when we freed him from under his car. A: alive B: live C: lively D: living
- The ______cell can convert the energy of sunlight into electric energy.
- _____ is a machine by which electrical energy is transformed into mechanical energy.