It’s said that scientists have ________ a way to deal with the serious disease

Where did you put my dictionary after using it this morning? –I put it back ______ I took it.

When do you get up _______ Sunday morning? —I get up _______ 8:30. [ ]

Joe just wanted to play a joke on her. He did not mean ______ Sarah.

Maria is wanted on the telephone. Where is she?—She _________ the library. You can find her there。