单项选择题

A．At a music store.
B．At the post office.
C．In a German class.
D．On the Internet.
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单项选择题
A．Soft water contains more dissolved minerals.B．Hard water contains more dissolved minerals.C．Hard water is not drinkable.D．Soft water is easier to drink.
A．Soft water contains more dissolved minerals.
B．Hard water contains more dissolved minerals.
C．Hard water is not drinkable.
D．Soft water is easier to drink.
单项选择题
A．On how to give presents to others on Christmas.B．On how to spend time with grandparents.C．On how to play hide-and-seek.D．On how to celebrate Christmas.
A．On how to give presents to others on Christmas.
B．On how to spend time with grandparents.
C．On how to play hide-and-seek.
D．On how to celebrate Christmas.
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