There is ___ food in the fridge(冰箱). Let’s buy some.

I want to write __________ article about the great inventors in the world. Can you help me?–Sorry, I don’t know much about __________ topic.

I called Hannah many times yesterday evening, but I couldn’t get through. Her brother ________ on the phone all the time!

We __________for a picnic if it ___________this Sunday.

There are ________ teachers in our school, ________of them are women teachers.