all boat was almost sunk by the dinosaurs which suddenly ________ to the surface, fighting each other, but fortunately the three men ________ get away.

the worldwide economic crisis（经济危机）in the USA grows，the possibility of lack of fund is also growing

I usually _______ a bike _________ from Monday to Friday.

Mary’s birthday ________ on a Sunday this year.

collected plenty of historical evidence, provedthat humans used to have different sleeping patterns.