“”是“函数的最小正周期为”的（ ）
（）—The plane is leaving right now, but Jim hasn't arrived yet.- Well, he said he _____here on time.
---Could you please tell me how soon Xi Jinping ______ his first visit aboard?---In about three weeks.
I will tell my daughter as soon as she _________ back from work.
Sue told me that she ____________ shopping with her sister the next day.
By the end of last week, she______in the west of China for two months helping the homeless children.
”
是“函数
的最小正周期为
”的（ ）
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