The English are proud of the 30th Olympic Games _______ in London in 2012.

A. to beheld       B. to hold           C. holding         D. held

___________in the study lost in thought for a long time, I suddenly realized that nothing in the world remains __________.

   A. Having sit; unchanged                B. To sit; unchanging

C. Sitting; unchanged                   D. Sitting; unchanging

The post-80’s and 90’s are ________, so it’s hardly surprising that boys have a close relationship with their parents.

A. said to grow up in a greenhouse          B. said to have grown up in a greenhouse

C. saying to grow up in a greenhouse  D. saying to have grown up in a greenhouse

________ several times, Bill made up his mind not to watch late night movies any more.

A．To be blamed    B．Having blamed    C．To blame    D．Having been blamed

__________ the police , he hid himself behind a tree .

A．Seen       B．To see       C．Seeing       D．See

We met a strong wind ______ by a heavy rain on our way home yesterday.

   A. company             B. accompanied      C. companion                      D. companying

Sent to the zoos in Beijing and other cities, the monkeys are reported ______.

A. to settle down                         B. to settle in

C. to have settled in                           D. to have settled down

Mother was in the kitchen ______ lunch while I was ______  the coming exam.

   A. prepared; prepared for                     B. preparing; preparing for

   C. prepared for; prepared                      D. preparing for; preparing

The maths problem remained confusing to the boy although ______ over and over.

   A. explaining           B. being explained         C. explained                 D. having explained

They suggested that the professor          just now should be made chairman of the meeting.

       A. referring to    B. referring    C. referred to    D. referred