C. Rewrite the sentences below starting with the words given.
 1. It will take them three weeks to finish renovating the shop. 
     In three weeks, they........................................................................................

2. Mr Thomas started teaching 15 years ago. 
     Mr Thomas has.................................................................
3. The committee is announcing the name of the new chairperson tomorrow. 
    The name of the new chairperson will.............................................................................................
4. It seems like Simon and Liz might split up soon. 
    Simon and Liz are on the........................................................................................................

 5. John will spend nine months working on his thesis before he completes it. 
     By the time he completes it, John.......................................................................................................
  6. When is your next doctor's appointment? 
      When are you due......................................................................................................
7. You can't know how difficult it is to get a novel published until you try. 
    Once you've tried to get a novel published, .............................................................................................
8. Sally never seems to remember her friends' birthdays. 
    Sally is........................................................................................................................