It ____ for three hours and the ground is too wet toplay on, so the sports meet_____. [ ]

Why does Mr Black look so sad this morning?— I hear that a fire________in his house and lots of valuable things were burned last night. [ ]

“You must keep______ in the hospital,” the woman saidto me ______ .

(2014·安徽两所名校联考)A survey ________ by the UN shows developing countries are particularly attractive to tourists.

The design isn’t successful unless it ________ people of all ages and social groups.