500KHz的静默时间为每小时的１５分钟和４５分钟开始的３分钟内。
正确
暂无解析
Ourcountryisnolongerwhatit_____.
Thebabyalwayssleepswithhiseyeshalf_____.
Weneedfriendsto________,orwewillfeellonely.
IntheendI______agoodefforttopasstheexamination.
—Shallwegooutingthisweekend?
—Oh,withallthiswork__________,Idon’tknowifI’llhavetimetogoout.