碳酸氢钠与酸类药物配伍会发生（） A.浑浊或沉淀 B.产生有毒物质 C.变色现象 D

用方框中所给单词的适当形式填空，每空限填一词。

Australia, hope, cheer, housework, two

小题1:Turn left at the ________ street. You’ll see it on your right.
小题2:Jenny ________ to be a volunteer (志愿者) in a small village.
小题3:—Are the Smiths ________?
—No, they are all American.
小题4:The students will ________ the class monitor when he appears (出现).
小题5:Alice is a nice girl. She often helps her parents with the ________.