______ can cause high blood pressure and hearing problems.
---Which city has _______ population, Shanghai, Hongkong, or Qingdao?---Shanghai, of course..
Just like weather, life_______ be sunny and beautiful all the time.
---Do you need a helping hand with the job?---I can_______ it. Thanks anyway.
---There’s too much salt in the Chinese diet.---So there is. The WTO says only 1.5 grams of salt_______ for each man every day.
--I saw you came to school by taxi this morning.--Oh, I_______ come to school by taxi, but it is raining today.