—Have you been teaching here since graduation? —No, I _____ on a farm for five years．

With the effects of global warming, trees          their leaves much later in the year.

--- How did your students express their thanks to you on Teachers’ Day? --- A gift, together with many flowers ______ sent to me by my students.

—Time          . It’s likely that we’ll miss the deadline. —Don’t worry. We have already got through 80% of the job.

According a recent survey, if the factory closes, a lot of people _______ their jobs.