I saw your sister ride a new bike thismorning.—A new bike She ________ it for about two years.

Is that your best friend Kitty? – No, it _________ be her. She flew toSingapore yesterday.

You’d better make a mark ______ you have any questions.

Getting your students ___ in classroom activities isvitally important.

He revisited his home village last month, and everything there _____ his sweet memory of his childhood.