So far nothing ________ Tom.I want to know the reason ________ he hasn’t written to me.[ ]

The young lady from Australia has a gift for creatingan atmosphere for her students _________ allows them to communicate freely witheach other

Mum, may I havesome cakes?——Sorry, there’s ____ left in thebox. I’llgo and buy some for you tonight.

Almost every teenager will experience a period in their life _____ they aren’t satisfied with their parents.

It doesn’t matter ________ you pay by cash or credit card in this store [ ]