Children under 12 years of age in that country _____ be under adult supervision when in a public library. [ ]

What are you planning this weekend— I don’t know. Maybe I will visit my grandparents.

Last week I took the Civil Service Admission Examination, for which I _____ for nearly three months

You ________ drive forward when the traffic light is red.[ ]

oblem of the widening gap between the rich and the poor, if not properly ___________, can result in many serious problems.