2.( ) Sunday, the store was closed.
① Being ② It being
3.( ) carefully, the document has some misprints.
① Reading ② Read
4.( ) what to do, 1 was at a loss.
④ Dont know ② Not knowing
5.( ) up late last night, I'm sleepy today. *stay up late 夜更かしをする
① staying ② Having stayed