David has tried 3 times to repair the clock. He will try（ ）time after having a rest.

单项选择题The number of foreign students attending Chinese universities（ ）rising steading in the past ten years.

单项选择题What are you readingA book（ ）by MoYan.

单项选择题If it（ ）possible, I would have helped him, but I was too busy.

单项选择题（ ）Finish cating lunch last ought to wash the dishes.

单项选择题Look! Here（ ）the bus.