Is oxygen the only gas ( ) helps fire burn?
举一反三
- Lily’s house is _________. A: On fire B: on the fire C: burn D: in fire
- FIRE的含义____;BURN的含义____
- They kept the fire ____ to keep them warn. A: burn B: to burn C: buring D: burned
- 1. The gas with maximum percentage in the atmosphere is .(Nitrogen / Oxygen)
- Every gallon of gas you save not only helps your budget, but also keeps a certain amount of carbon dioxide out of the atmosphere. The chinese meaning of the word underlined in the sentence is .