______ as E-commerce, electric commerce plays a major role in our daily life.
A: know
B: knew
C: known
D: knowing
A: know
B: knew
C: known
D: knowing
举一反三
- IfI________English,Iwouldreadthepapertoyou. A: know B: knEw C: known D: knowing
- Computers play a very important role in our daily life.
- By reading the article, we know how ______ in our daily life.
- The most important form of energy is electric energy, which is (wide) _____ used in our daily life.
- Never having been to China, I ___ little about it. A: knew B: an knowing C: has known D: know