What can I do for you?— I’d like two ____.

There were lots of people _________ the bus on my way back home yesterday.[ ]

What do you think of the two backpacks? —______ of them are very nice.

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

Lingling’s aunt will meet her________the airport________Saturday morning.[ ]