—_______ three weeks.

连词成句
she /Is /her/ visit/ enjoying ?
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is /Chang jiang/ than /the River Thanes/ wider/
____
walk up /We,re going to /the Great Wall.
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won’t/on the blackboard /with chalk /Teachers /write.
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is / cheaper /and / safer/ skiing / Running / than.
____

已知命题p：实数m满足m²﹣7am+12a²＜0（a＞0），命题q：实数m满足方程$\frac{x^2}{m-1}+\frac{y^2}{2-m}=1$表示焦点在y轴上的椭圆，且非q是非p的充分不必要条件，求a的取值范围．