1 . Malaysia Airlines(马航) flight MH370 disappeared from radar(雷达) screens an hour after it   _________ on March 8 . It has _________ for more than 2 years.

The plane may fall into the sea. China, Malaysia and many other countries have joined to search for the _________ on the sea. The relatives of the 227 passengers and 12 crew(机组人员) are _________ good news from them.

How did the accident   _________? It is said that the plane was attacked by the terrorists. Some think there may be something wrong with the plane, and_________think the accident may be _________ by the mistake of the crew. However, it is _________ to tell the reason because the plane hasn’t been found yet.

It may _________ some time to find the missing plane and even more time to get to get to know the truth of what happened. However, we can’t stop __________ what happened to the plane __________ it is found.

Whether the missing plane is found __________ not, the whole world should __________ more attention to the safety of people, especially at airports.

We hope these people on the plane will be __________ , and they can get together with __________ family members.