中国大学MOOC: 1. ( ) Since the disappearance of MH 370 and the September 11 incident, airlines take strict measures to protect the safety of the planes.
举一反三
- 中国大学MOOC: Generally, airlines have strict restrictions on the refund and endorsement of economy class.
- What measures did the other airliners take after the incident?
- I think it is high time we (take) __________ strict measures to stop pollution.
- It is essential that we __________ measures to protect the ozone layer. A: will take B: should take C: would take D: took
- If insurance guidelines ________ people to take greater safety measures, all of society benefits.