The manager thought________difficult to finish the task in such a short time.
Since 1 won the big prize,my telephone hasn’t stopped ringing. People____to ask how I am going to spend the money.
You can see the stars on a clear night,but in the daytime they are _______.
Since Tom ______ downloaded a virus into his computer, he can not open the file now.
He began to take political science ____ only when he left school.
She devoted herself ______ to her research and it earned her a good reputation in her field.