With economy developing at great speed, our city has _____ quite a few changes in recent years.
| A．witnessed | B．accumulated | C．arisen | D．introduced |
Currently，many American women are still faced with the _____ of choosing between work and family commitments.
| A．desperation | B．confusion | C．dilemma | D．concern |
— Thanks for the lift. I do appreciate it.
— _____.
| A．No problem | B．With pleasure | C．Not necessary | D．A piece of cake |
It was at the school _____ was named after a hero________ he spent his childhood.
| A．which, that | B．where, where | C．that, where | D．which, where |
On December 26, 2004, a terrible tsunami happened in the Southeast Asia, _________ many people.
| A．killing | B．had killed | C．killed | D．having killed |