I am one of the students who __________ English well in my class but he is the only one of us __________ maths well.
The water ________ cool when I jumped into the pool for morning exercise.
—What's that noise? —Oh,I forgot to tell you.The new machine ________.
—Why does the lake smell terrible? —Because large quantities of water ________.
His sister left home in 1998,and ________ since.
In the near future,more advances in the robot technology ________ by scientists.(2011·湖南)