The bus _____start;I don’t know what to do with it.（b）

The bus _____start;I don’t know what to do with it.（b） I really don't know -----with it.A .what to do B.how to do 选 I don't know ______.A what to do with it B what to do it wit I really don't know ( ).A.what to do the next B.what to do i I don't know （ ） with the problem.A what to deal B how to de I don't know ( ).A.what to do it B.how to do it C.what to do i don't know ---with the problem(填how to do 还是what to do ）.3 将I don't know what I should do to deal with the problem 改成简单 找错----Sorry,I don't know what to do it 改错：I don't know what to do it. I don't know what/how/when to do with the problem选择的原因 I don't know ( )to do with the math problem?用who还是what