In August 1977, a satellite to gather data about the 10 million black holes which are thought to be in the Milky Way.

Out sleep influences our mood. our mood, ________,affects our performance

Thetheoryofblackholesinspace__(accept)bymanyseriousscientistsandastronomers.

For those involved, the scandal has been a very________(pain)experience

He took his umbrella with him lest it ____(rain).