He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．

-- Have you been to the Great Wall?-- Perhaps not in my memory. _______, it might have been during my early childhood.

Finally an agreement _________ after they had two-day discussion.

Practising Chinese kung fu can not only  _____   one’s strength, but also develop one’s character. 

—It's hot. Would you like some icecream?—I'd like some, but I'm ________.