According to the lastest study ,the population of Xuzhou has grown to more than 30 times____it was in 1949. The figure ____to 9.5 million by the end of 2010.
The manager, ____ it clear to us that we should stick to the plan, left the meeting room.
Could it be in the room____ we had a talk last night ____ you left the key?
—I failed again. I wish I ____ harder. ---But you ____.
While there are quite a few differences in the education system, in many countries education is ____.
Some plants are vey ____ to light; they prefer the shade.