it is a problem that doesn't need___right nowto solveso be solvingbeing solvedsolving
问题描述：
it is a problem that doesn't need___right now
to solve
so be solving
being solved
solving
答
solving
need/require/want在物作主语的时候往往接doing的主动形式表被动，如：My hair needs cutting.
答
solving
答
solving
sth need doing是固定形式,后面还有right now,但不必加上being
答
being solved 被动