When her neighbor Grandma Wang became ill, the girl often ____.
A. fitted in
B. worked out
C. held back
D. helped out
①fit in 习惯，合适;安装好
➢She was great with the children and fit in beautifully.
②work out 处理;算出;完成;拟定出
➢The police worked out a plan to catch the thief.
③hold back 阻止;畏缩;躲藏;抑制
➢She kept trying to hold back her tears.
④help out 救助，帮助(渡过难关)
➢I help out with the secretarial work.