Was it at the school _________ he spent his childhood?[ ]

When did your brother begin to show his interest in medicine —It was a Saturday he noticed his classmate experimenting on a frog in the lab.

In the past I often wrote _____ my parents about my study at school, but now I e-mail them ____ rita@sunshinetown.com.cn or call them ______ 5551 6789 .

We will go bike riding it rains this afternoon.

Chinese people think a lot about food. In fact, I think that they are sometimes _____ with it.