17. By this time next summer, you _____ a high paying job. But I will still be studying.
On seeing me, he turned over and pretended _____ around in the street.
_____ recent survey shows that the number of Non-English speaking families in US is on ____ increase this year .
--Look! There is a long queue waiting for the bus. Shall we take a taxi?--_______. It will save us a lot of time.
_______ with the size of the whole earth, the biggest ocean does not seem big at all.
--How about the book you are reading? --Good indeed. It ______many problems we have come across in our study.