_______ from his family for over two years, he is now eager to go back home.
| A．Having been separated | B．Being separated |
| C．Separating | D．Having separated |
I still remember the accident and the troubles ______ has caused to me.
| A．which | B．what | C．it | D．that |
Fujian has shut down the chicken markets ______ human infections of H7N9 were found.
| A．whose | B．why | C．which | D．where |
I got to the lecture hall very early, ______ to get a good rest.
| A．hoping | B．hoped | C．to hope | D．hope |
It hasn’t been announced ______ the plane is to take off.
| A．where | B．when | C．how | D．why |
Students ______ to do some voluntary work every year.
| A．were encouraged | B．are encouraged |
| C．encourage | D．encouraged |