After a while Julia got bored ________ lying on the beach, so she went off to explore the town
E) on F) for G) about H) to
American people are wondering whether the newly-elected president and his administration will keep the nation safe and defend it _______ any terrorist attack in the future.
I’ll go to America to strengthen my English_______ it isn’t too expensive.
This January will be very precious for us by which time we______ reviewing Senior Book I.
—What does Roger Brown do for a living?—He is one of the most successful________ in the city.
—Hold the ladder for me!—That’s_________.