Mary is girl, but she knows a lot about science.

Jim went to answer the phone _____, Harry started to prepare lunch [ ]

There will be a football match tomorrow. Would you like to gowith me? ––If I have time, I _______ with you.

I want to buy the book ‘The old Man AndThe sea’. Do you know its_______ — Not very clearly, Maybe fifty yuan.

The young writer_____his success to his teacher’s encouragement.