—You look so happy . Any good news ?—Yes . ________ I walked out of our school , I met an old friend .
If it tomorrow, we to climb mountains.
Bob never does his homework ________ Mary. He makes lots of mistakes.
Don’t forget to ______ the lights and the TV in the sitting room before going to bed.
Can you finish the work well with _________ money and ________ people.
Which city is________________, Beijing, Shanghai or Guangzhou?