______ the blackboard, and you can ________ some number on it.

It took her______ to cook the delicious food.

Have you seen______ pen? I left one here this morning.— Is it___________ black one? I think I saw it somewhere.

What’s yourname, please?— Robert Thomas Brown. You can call me Robert.

It is ________ my old camera, so I have just bought a new one.[ ]