China made its firm ____ to cut carbon emissions in 2009.

I can’t sing_______dance. Would you please teach me________first

The handsome man is my uncle ________ overcoat is black and white.

“Take this medicine(吃药) and it will make you better soon,” the nurse says to the sick boy.

I thought I _________in my project report , but the manager said he didn’t see it at all.