To____the patient's quick recovery,doctors and nursrs took turns looking after him day and night.A.ensure B.undertake C.promise D.indicate选什么理由!

To____the patient's quick recovery,doctors and nursrs took turns looking after him day and night.A.ensure B.undertake C.promise D.indicate选什么理由!
To____the patient's quick recovery,doctors and nursrs took turns looking after him day and night.
A.ensure B.undertake C.promise D.indicate
选什么理由!

To____the patient's quick recovery,doctors and nursrs took turns looking after him day and night.A.ensure B.undertake C.promise D.indicate选什么理由!
ensure
简单翻译下填就可以选：为保证病人能够迅速康复,医生护士轮流连夜看护他
^^y

B
为了确保病人的快速恢复，医生和护士日夜不停的轮流照顾他。
ensure确保
undertake承担，着手做某事
promise保证，承诺
indicate暗示。

A