complete the second sentences so that it has a similar meaning

Complete the second sentences so that it has a similar meaning to the first sentences.Use the word given and up ro four more words.
1.Climate change is now an accepted fact.
It__(known)the climate is changing
2They are optimistic about the patient's changes of recovery.
The patient__(expected)
3.They say taht the burglars got away by using a helicopter.
The burglars __used a helicopter(said)
4.There are probably no survivors from the shipwreck.
It__no survivors from the shipwreck.
5.According to experts,Neanderthal Man could speak in a limited way.
Neanderthal Man__able to speak in a limited way.(believed)
6.Doctors now recongise taht malaria is transmitted by the Anopheles mosquito.
It____is transmitted by the Anopheles mosquito.(acknowledged)