Lily and Lucy are twins, they _____ good girls, they often help others.

27．—What did you ______ while in college? —English, politics and economics．

Where did the money you had got go— On a computer, ______ on the desk over there.

How can I improve my English— Only by reading a lot _______ progress inEnglish.

The policeman told her father __________ more carefully next time.