After three year’s______(train),Mary began to work on a plane.They should _____(help)when they are
问题描述：
After three year’s______(train),Mary began to work on a plane.They should _____(help)when they are
After three year’s______(train),Mary began to work on a plane.
They should _____(help)when they are sick.
The nurses ______(not be)afraid when they were on the plane.
答
training,
help
were not