The pen I _____ I_______ is on my desk, right under my nose.

world’s largest retailer, Wal-Mart,has opened its _____ third store in Beijing, which means the firm now has 52stores in China

I’m sorry I didn’t recognize you just now You look different _________

It was in the factory ________ TV sets were produced ________ we met for the first time [ ]

Now more and more people have come to know the role that trees _____in our natural environment.[ ]