Why don’t you try to work out the maths problem ______waiting for the teacher to tell you the answer?
The magician picked several persons from the audience and asked them to help him with the performance.
The open university was started in order to help those who _____ having a university education when they were young.
Jack almost fell off the cliff, but managed to _____ until help came.
It isn't so much whether he works hard; the question is whether he works _____.
Alice was very sorry to hear that her grandmother had _____ two days before.