1．(湖南卷)If nothing is_done(do), the oceans will turn into fish deserts.
2．Before you leave the classroom，the door and windows should be_closed (close)in case of rain.
3．Every possible means has_been_tried (try)by the company to improve its production.
4．The car which is under repair belongs (belong)to Mr. Green.
5．There's a crowd of people over there. Go and see what is_being_sold (sell)．
6．Over the past few years, a large number of houses have_been_built (build)for the lowincome families.
7．Mum, I was wondering if you could lend me a few dollars until I get paid (pay)on Friday.
8．He said the work would_be_finished (finish)in half an hour with the help of classmates.
9．—Have the Greens moved into their new house already?
—Sorry, I have no idea. But I was told that it was_being_decorated (decorate)when I met them last week.
10．In the near future, more advances in the robot technology will_be_made (make)by scientists.
