Don’t talk ______. Your grandmother is sleeping now.

He’s got himself into a dangerous situation he is likely to be accused of meeting someone[ ]

Why don’t you just _____ your own business and leave me alone? [ ]

Our usual walk is to or from the subway, ______ is how we get to work．

s Beidou global satellite navigation system willhave been completed by 2020, ____ of more than 30 satellites