—Was ______ Bill, ______ played basketball very well, ______ helped the blind man cross the road?—Yes, of course. He is always ready to help others.
We made plans for a visit but _____ difficulties with the car prevented it.
The generation _____ makes it difficult for parents to understand their children's opinions.
John _____ knowledge of radio just by staying around the radio station.
With sufficient scientific information a manned trip to Mars should be _____.
At first the institute refused to purchase the telescope, but this decision was _____ revised.