Different kinds of bread are _____ ______ for sale

(a)  

The woman is (a)   a shopping cart

The (a)   door is wide open

There are (a)   on both sides of the stairs.

A (a)   is walking down the stairs.

Some people are (a)   their bikes.

The bikes are (a)   next to a wall.

Some of the bikes (a)   baskets.

One woman is (a)   a cup of water

One man is (a)   in a notebook.

There are some cups on the (a)  

Some (a)   is on the table.

The tables are all (a)  

A waiter is (a)   the table.