1 . 下列每小题中各有一处错误，请将错误项填写在括号中，并将正确答案写在横线上。
1. It’s important of us to work hard in order to have a better life.
                         A          B       C                            D
2. The teacher told us that the gravity on Mars was only about three-eighths of that on Earth.
                         A                                        B                           C            D
3. If you won’t tell me what the problem is, I can’t help you.
                  A                                      B     C          D
4. Though my grandmother is in her nineties, but she is still healthy enough to walk her dog.
                                             A          B       C                         D
5. The news that the giant panda Yaya returned to China made us really exciting.
                      A                                     B                       C               D

2 . —________ that the 31st Olympic Games will be held in New York.
—________ exciting news!

A．It said; What

B．It is said; What

C．It is said; How

3 . It is kind ________ you to try to save the dog. How great you are!

4 . It’s important to a________ (避免) touching your eyes, nose and mouth before washing hands.

5 . — It’s so kind ________ you to help me with the problem.
— That’s OK. It’s necessary ________ us to help each other.

A．of; for

B．of; of

C．for; of

6 . is, it, to, to, go, time, sleep
_________________________________.

7 . — ______ does it take you ______ to work?
— Ten minutes by bus.

A．How long；to get	B．How far；to get
C．How long；getting	D．How far；getting

8 . It’s best ________ Hainan in winter.

A．visit

B．visiting

C．to visit

D．to visiting

9 . It is very dangerous __________ children to cross the busy street.

A．of

B．by

C．on

D．for

10 . —I want to set up a Nanyin club in our school.
—That’s a good idea! It is quite necessary for us ________ this traditional art.

A．spread

B．spreading

C．to spread