----I hear that Tom was badly injured in a car accident and is in hospital now.-----_________, let’s pay a visit to him.
Though the training cost a lot of time and effort, I do think it ______.
After careful consideration, he decided to take the position, ______ he knew it would be difficult for him.
The teacher handed our writings back to us, ______ some necessary changes.
You must ______ that the power is off before you leave the lab.
At such gatherings, people ______ are not necessarily your relatives or friends.