1. 你的衬衫是棉的吗？ ____ your shirts _____ ____ cotton? 2. 是的, 而且它们产于美国。 Yes, they are. And they were _____ ___ the US. 3. 飞机模型是由什么制成？ ______ the model plane ______ of?

Grammar Focus

made in

Are made of

What’s made