When I got to the store, “iPhone 6 Plus” had been sold out. The salesmen didn’t know_____________.

Where did you see the sponsor, Madame? —It was in the supermarket __________I was doing some shopping with my husband

chool has recently decided thatstudents aren’t permitted to use mobile phones at school, but I find itdifficult to _______ this decision

Mr. Mike, in ______ supermarket we bought an ipad last week, will give us a report on management this evening.

______ a terrible storm would take place in Shanghai.