_________ your composition carefully, some spelling mistakes can be avoided.
The boy ________ a strange disease is trying to live a normal life.
It was in 1969 ________ two Americans went to the moon by spaceship.
When I came ________ with the teenager hidden in the cave, I was surprised to find him ________ covered with dust.
You can never imagine what great difficulty I had ________ his parents.
One of the engines of the plane was out of order and the bad weather ________ the difficulty.