1. Just several years ago, stamps were one of i________ necessities in our daily lives. (--absolutely necessary; vitally necessary)
举一反三
- It’s necessary to learn some____(science) knowledge about our daily life.
- It is absolutely necessary for us to have sufficient oxygen if we （）to go on living A: are B: were C: had D: having
- These two persons are not comparable. One (live)___________ two thousand years ago while the other lives today.
- In part one, the author tells us that it is necessary to choose________to shape our outlooks and expectations.
- If_____, we’ll continue our experiment after office hours. A: being necessary B: be necessary C: is necessary D: necessary