I don’t suppose they could have finished their experiment, they?— , they are still doing it in the lab.

I have _____ useful dictionary. Do you have ______

The four years, from 1860 to 1864 ___ Lincoln spent fighting for freedom of the slaves is the time ___ the American people will never forget.

Few men________ shopping with their wives ________ at home to watch TV．

Mike is often absent from class — Tell him he answerfor it if he goes on behaving like that