选择题Since June 1st last year all the supermarkets have ____ free plasic bags.A.to stop to provide B.to stop providingC.stopped to provideD.stopped providing

问题描述:

选择题Since June 1st last year all the supermarkets have ____ free plasic bags.
A.to stop to provide
B.to stop providing
C.stopped to provide
D.stopped providing