They have been waiting for many hours to see the singer, but the airplane must have been _____.
—Pick, I did very well in the maths exam last week. —Congratulations, Jim! And I did _____. I got a full mark and 20 extra points.
The college education system should be reformed ______ it can follow the pace of the economic development.
Researchers now have some proofs ______ reading the Roman alphabets and Chinese characters uses different parts of brain.
He _____ his potential had it not been for his desire to meet new challenges.
_____ the lack of workforce in many industries, workers are now commanding higher salaries than they used to be.