— No one can answer the question _______ we can complete the task in time, do you know? — Yes, and this is because we don’t know the way _______ the scientist used last time.
The professor spoke very clearly to make his speech ___.
Her ___ look suggested that she was completely ___.
“Bill, keep the things ___ here secret,”said the manager after meeting.
It is one of the funniest things ___ on the Internet so far this year.
According to the driver’s explaination, it was not his carelessness but the bad road conditions that ___ for the accident.