As soon as they arrived in the big city, they found it difficult to find somewhere cheap .
| A．to live | B．to live in | C．to live on | D．living |
By the first day of August, 2007, the PLA has its ______ birthday.
| A．eighty | B．the eightieth | C．eightieth | D．eighties |
一Is the girl ______ is interviewing the manager of that company your friend?
一Yes , she is a journalist from CCTV.
| A．whom | B．which | C．who | D．whose |
Don’t be afraid of asking for information ______it is needed.
| A．when | B．after | C．although | D．unless |
I want to know ______ do to help my neighbour.
| A．what I can | B．what can I | C．how I can | D．how can I |
It’s important ______ the piano well.
| A．of him to play | B．for him to play | C．of him playing | D．for him playing |