问题

eeply absorbed in work, _____ he often was, hewould forget all about eating or sleeping.

A:that
B:which
C:where
D:when

正确答案是：

同类题型

Is your name Brown — ________.

Not until I dropped off from school ____ how much time I had wasted.

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Yesterday I really enjoyed myself but today it’sraining and cold what aday makes!