It’s ___________ black．It’s ________ black ruler．

Would you mind if I turned on the radio and listened to some music?—______. In fact, I also like to listen to music in my car.

Don’t worry! I ____ your best friend who will do as far as I can to help you.

I’m a teacher. I’m always very ______ with my work.

What did the policeman say to you, Liu Ying?— He told me ______ my purse in the bicycle basket. It’s too dangerous.