1. It's one of the biggest big factories in Shenzhen. Fifteen thousand people are employ / employ / are being employed / are employed there.
  2. Water covers / can cover / is covered / is covering most of the earth's surface.
  3. 1How much of the earth's surface covers / can cover / is covered / is covering by water?
  4. The park gates are locking / is locked / are locked / locks at 6.30 p.m. every evening.
  5. Your contract was being posted / was posted / posted / post last week and it will arrive / had arrived / arrived / arrives this morning.
  6. Richard's parents die / are died / died / are dying when he was a toddler. He and his three sisters are bringing up / brought up / were brought up / have brought up by their aunt and uncle.
  7. While I was travelling around Europe , my camera stole / had stolen / was stealing / was stolen from my rucksack.
  8. While I was on holiday, my camera will disappear / has disappeared / disappears / disappeared from my rucksack.
  9. The company is a small subsidiary so it’s not independent. It owns / owned / has been owned / is owned by a much larger company called Mergerthon.
  10. I saw an accident last night. Somebody called / calls / was calling / had been calling the emergency services but nobody injured / was injured / injury / was injuring so the medics aren’t needed / haven’t needed / doesn’t needed / weren’t needed.