Although ______ for many years, the two old sisters recognized each other at once.
| A．having been separated | B．being separated |
| C．having separated | D．had been separated |
When ______ why he behaved that way at table，he made no reply．
| A．being asked | B．asked | C．asking | D．to ask |
The problems_______ at the meeting tomorrow are really hard to solve．
| A．discussed | B．to discuss | C．to be discussed | D．discussing |
______ in a red skirt in the opening ceremony of the 2008 Olympic Games, the little girl Lin Miaoke won the hearts of the people all over the world．
| A．Dressed | B．Worn | C．Dressing | D．Wearing |
There was a sudden burst of light ______ a terrible noise.
| A．following | B．to follow | C．followed | D．followed by |
Every time he had a chance，he would talk about the great difficulty he had _____ in the new country．
| A．settled | B．settling | C．to settle | D．settle |