问题
eeply absorbed in work, _____ he often was, hewould forget all about eating or sleeping
A:Never too late to learn
B:Never count your chickens until they are hatched
C:The early bird catches the worm
D:Everyone has his feet of clay
B:Never count your chickens until they are hatched
C:The early bird catches the worm
D:Everyone has his feet of clay
正确答案是：
