I couldn’t help but very worried about his illness when I heard he was in hospital because of heart disease.
A. to feel
B. feel
C. feeling
D. to have felt
网友回答
A. to feel
(答案→)B. feel
C. feeling
D. to have felt
解析：考查词组：can’t/couldn’t help but do只好做…，不得不做，句意：当我听到他因为心脏病住院了，他只有担心他的病。选B。