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- 1Vince can't come out to play because he ___ help his dad in the garden.A is having to B has to
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- 3甲乙两车同时从ab两地相向而行,第一次在离b地60km相遇,第二次在离a
- 4The days are short,_______ it is noe December.
- 5氯化钠溶液中混有硫酸镁与氯化镁为什么提纯候还要加入稀盐酸使ph等于7
- 6What hurts more,the pain of hard work or the pain of regret.这句话里后面两个词组充当什么成分?
- 7铝合金6061的密度、弹性模量和泊松比,请问您还知道吗?
- 8When the old man was alive,he ____ sit for hours at the door.
- 9i hate you i hate you i hate you i hate you i miss you
- 10过氧化钙带有数量不等的结晶水,通常还含有部分CaO.