I have trouble ________ the new words. 

 You _____ get the machine repaired this week. I won’t need it until next month.

—Are you going to Guilin by plane?—It’s fast but expensive, so I’m not sure. I __________ take a train.

—Dad，can I go to the movies tonight?--Sure，but you__come back home before 9 o’clock.

As a well-known Chinese saying goes, “If you want to be rich, you______ first build roads.”