______by many people，the spokesman made an exciting speech．
| A．Surrounding | B．Having surrounded | C．Surrounded | D．Surround |
With no one to ______ in such a frightening situation, she felt very helpless.
| A．turn on | B．turn off | C．turn around | D．turn to |
Heisnotsuchaman_______wouldleavehisworkhalfdone.
| A．that | B．which | C．who | D．as |
_______ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.
| A．Being separated | B．Having separated |
| C．Having been separated | D．To be separated |
That was the first time I _______ there and I was impressed by the friendly people very much
| A．go | B．was going | C．had gone | D．have gone |
She had a computer at home, and her parents desired that she ______ all her work at home.
| A．do | B．does | C．must do | D．would do |