when lost in work,___he often was
when lost in work,___he often was
When lost in work,he often was,____he would forget all about eating and sleeping．
1.as
2.which
3.that
4.what
why?
When lost in work,he often was,____he would forget all about eating and sleeping．
1.as
2.which
3.that
4.what
why?
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