European scientists announced that the speed of light isn’t the speed limit. —Perhaps it is the biggest challenge to Einstein’s Theory of Relativity. No one _____ any crack in histheory for more than a century. [ ]

15. He ________ his doctor’s care ________ he is quite well again.

You _______ write the poem down. Our teacher will give us a copy.

______we don’t lose hope, there is still a chance for us to survive the snowstorm

The child was toldto ______ for being rude to his uncle.