.. ________the cake________five parts. We will share three of them and leave the rest to Jack. 

 The days we look forward to ____at last. 

I saw a woman running towards me in the dark. Before I could recognize who she was, she had run back in the direction ________ she had come. 

Wouldn’t it be       for you to pick me up at four o’clock and take me to the airport.

 No one knows exactly when our ancestors started talking，but new evidence suggests  _______might have happened a long time ago．