–----- Have you been to the Great Wall? ------ Perhaps not in my memory. _______, it might have been during my early childhood.
During the war, people here _____ much pain.
The question of drug-taking is bound to (一定要) _____ at the next conference.
_____ be sent to work here?
--- How long ___ in Shanghai? --- For two weeks. I’m going to visit some schools in Shanghai.
Do you know how much that _____?