It’s sometimes difficult to tell one twin from _____.

 One side of the board should be painted yellow, and _______ white.

I remember a ____ famous scientist said that we should believe in ourselves first of all.

______ would have been too embarrassed, but he walked right up and asked for her autograph.

The potential of economic development of one region varies from ______ of another.

If a book is in French, ____ will be a challenge for me．

Whoever does not have a mobile phone must borrow _____ because you will certainly need ____ for the tour.

Several of the passengers were hurt and one was taken to hospital. Luckily ____ was killed.

Seeing a large crowd at the street corner，I became aware of     unusual happening．

He promised to buy me a nice gift for my birthday,          beyond my imagination.

Many people like to talk about generation gaps. I don’t think there is       in my family, though.

--- Do you have any fashion magazines? ---Yes, I have a lot and ____are bought by my older sisters. 

Since many young people have become rich on Taobao.com, I wonder what        ________ is like to run a successful on-line business.

Jackie would like to buy an iphone 5 but _____ was available from that shop.

Tom told me that he needed a chair and that soon he found      .

There is        as good as the taste of a fresh apple, especially in the fall.

I need some carbon paper badly, but there is _____ at hand.

The internet has made ____ possible for everyone to talk with friends miles away.

—Which kind of juice would you prefer, pineapple or orange? —_____. I must say I’ve a strong preference for tea. 

My elder brother has gone to Tibet to work as a volunteer teacher. Influenced by him, I also want to become_______when I graduate from the university.