1. Bags should not ____ alone at any time.
left be left be leaving

2. In the past, ice had ____ from the iceman.
bought to be bought been bought

3. Refreshments will ____ during the intermission.
be providing be provided been provided

4. Basketball ____ by a Canadian in 1891.
was invented invented has been invented

5. A new hockey arena ____ here next year.
will build is going to be built builds