When he saw a little boy ______ in the river, he took off his shirt and jumped into the water.
—What's the matter with Della? —Well,her parents wouldn't allow her to go to the party,but she still ________.
—Would you like to join me for a quick lunch before class? —________,but I promised Nancy to go out with her.
In my opinion,life in the twenty-first century is much easier than ________.
When I handed the report to John,he said that George was the person ________.
It is said in Australia there is more land than the government knows ________.