John is still in hospital and the doctors will do all they can to save (save) his life.
What's the matter?The door is locked (lock).
Mr.Henry was training(train) the football players on the layground at that moment.
I hear that she is the only one to know (know) the secret of the robber.
---绝对正确！
to save
is locked
was training 用过去时
knowing
你怎么敢说绝对正确呢!!第三题就要用过去时态~~at that moment意思是"那时候" 已经过去了的!
to save 表目的
is locked 分词表状态
was training 过去进行时，因为at that moment
knowing
to save
is locked
was training
knowing
to save
is locked
is training
knowing
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