I was eager to have these photos _________ because I wanted to send them to my mother.

We were about to climb up to the top of the mountain ________ it began to rain heavily.

With so many trees _______, the students felt very _______[ ]

_____________, I will go and visit you when I am on business in Quanzhou. [ ]

The price system is a complex network composed ofthe prices of all the products bought and sold in the economy as well as ofa great number of services