The child keeps () for her mother outside during the meeting .
A. wait
B. to wait
C. waiting
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哪个国家是欧洲第一个建立议会的国家,也是欧洲第一个迈向君主制的国家?
Who () your pets when you are not at home?
A. takes care
B. looks care
C. takes care of
感染性病原体职业暴露按传播途径分类,主要包括()、()和()暴露。