In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
—I’ll tell Mary about her new job tomorrow. —You ________ her last week.
On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
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.