Often, when he            something that            him, he wasted his time drawing little pictures.

A．should be doing, gave

B．should have been doing, was given

C．should do, was given

D．should have been doing, had given

慢性萎缩性胃炎病人一般不会出现（）

A.贫血

B.消瘦

C.舌炎

D.反酸

E.腹胀