You use technology every day. you use your household appliances,phones,computers,Tv's,cars everything we do uses technology
The first are true the last are false sorry if this doesn't help :(
What I think he means is that the bystanders knew what was happening but didn't stand up for it. They didn't fight for the Jews rights. But in my opinion that statement is wrong since anyone who stood up or defended the Jews would be killed.
Sentence b does not use an adverb clause
C and D i know because my dad owns a Business