All his time _______research on Chinese history, he has no time for outdoor activities.
| A．devoted to do | B．devoted to doing |
C．devoting to doing | D．is devoted to doing |
At the age of 29, Dave was a worker,______in a small apartment near Boston and _______what to do about his future.
| A．living;wondering | B．lived;wondering | C．lived;wondered | D．living;wondered |
____by the advances in technology, many farmers have set up wind farms on their land.
| A．Being encouraged | B．Encouraging | C．Encouraged | D．Having encouraged |
In April ,2009,President Hu inspected the warships in Qingdao,____the both anniversary of the founding of the PLA Navy.
| A．marking | B．marked | C．having marked | D．being marked |
______Not to miss the flight at 15:20, the manager set out for the airport in a hurry.
| A．Reminding | B．Reminded | C．To remind | D．Having reminded |
When we visited my old family home, memory came_____back.
| A．flooding | B．to flood | C．flood | D．flooded |