英语选择Is the matter ____that you wouldn't even stop for just o

英语选择
Is the matter ____that you wouldn't even stop for just one minute to consider it
a.of so little importance
b.such little importance
c.so little importance
d.such little importance
She didn't mind ____all her spare time to ____the sick old woman.
a.devote...help b.to devote...helping c.devoting...help d.devoting...helping
It's time we ____wasting our time doing nothing.
a.will stop b.stoppen c,are going to stop d.must stop