when we are ___ trouble they often help us.A.inwhen we are ___ trouble they often help us.A.in B.on C.with D.without选择哪个,为什么
问题描述：
when we are ___ trouble they often help us.A.in
when we are ___ trouble they often help us.
A.in B.on C.with D.without
选择哪个,为什么
答