-Have you taken Jim's advice?-No,I don't think it worth ________a second time.
I thought Mary was a very shy girl ____ I met her. Actually she was an outgoing girl.
When __________, the factory will provide new jobs for graduates.
--Is it in the park ______we had a celebration party yesterday ______ you found the wallet? --You are right, it was found in the park!
When I entered the classroom, I found all my students_____ in their exercises.
In their country, some of the wheat is from Australia, _________is from Canada.