II. 单项选择21. —Hello, Jane. I come to say goodbye to you. I’ll start a new job in another company. —_______.
With a lot of difficult problems ________, the newly-elected president is going to have a hard time.
Paris is situated _______ the River Seine.
The book came out in 1973 and it _________into thirty languages ever since.
Theworkershaveproduced_______thisyearastheydidtwoyearsago.
Seeing the owner, away ________.