The park ________ bottles and cans after the concert. [ ]

Jack Chou will give a concert at theCity Stadium on Sunday evening—- Where did you ____ that

Mr. Black is very happy because the clothes made in his factory have never been ____.[ ]

Financial markets will be disturbed as ______ business adjusts its working approaches and policies from an assumption of 3-3.5% potential output growth.

When the meeting was ______, it was already midnight