It will take us about an hour to get to the airport, _______ possible traffic delay.

  A. allowed for      B. allowing          C. allowed           D. allowing for

 At the sight of the policeman, ___from behind the door.

A. did the boy rush out                       B. did he sit down

C. out rushed the boy D. rushing out was the boy

 Unless _____ to speak, you should remain silent at the conference.

A. having invited    B. inviting        C. being invited      D. invited

 Sometimes she was dying____________ her husband about it.

A. tell             B. telling          C. to tell          D. of telling

 __________ from above, the 2008 Olympic stadium in Beijing looks just like a bird’s nest made of the branches.

A. To see             B. Seeing               C. Seen          D. Having seen

 The song You And Me _________ on the radio interests everyone.

A. playing            B. played               C. is played     D. has been played

 ____________ and out of breath, we reached the top of the mountain and stopped __________ the beautiful scenery.

A. Tiring, to admire  B. Being tired, admiring

C. Tired, to admire   D. Tired, admiring

 The little boy isn’t getting on well in maths and worse still, he is even unwilling to go to school. With her son _____, she feels very ______.

A. disappointing；worrying                    B. disappointing；worried

C. disappointed；worried                                       D. disappointed；worrying

 Upon __________ home, he was arrested by the police.

A. arriving           B. arrived        C. arrive         D. to arrive

 I like getting up very early in summer. The morning air is so good _________.

A. to be breathed     B. to breathe           C. breathing     D. being breathed