Answer：

Blank 2： rise/ increase

Blank 3:   peak

Blank 4:   fall/decrease

Blank 5:  fall/ decrease

Answer:

Blank 2： dramatic rise/increase

Blank 3:   peak

Blank 4:   sharp fall/decrease

Blank 5:   gradual fall/decrease

Answer:

Blank 1： rose/increased dramatically

Blank 2:   peaked

Blank 3:   fell/decreased sharply

Blank 4:   decreased/fell gradually

Blank 5:   fluctuated

Answer:

Blank 2： of

Blank 3:   at

Blank 4:   to

Blank 5:  from; to

Answer:

Answer:

a downward

Answer:

Blank 1: rose considerably

Blank 2: increased more sharply

Blank 3: upward

Answer:

1. graph A

2. chart B

3. In Graph A, the present simple and present perfect; in Chart B, the past simple

4. The present simple is used to talk about what the graph shoes now.

   The present perfect is used to describe a trend which started in the past and continues to the present.

   The past simple to describe a trend which ended in the past.

   
   

   
   

   
   

   
   

Answer:

Blank 2: shows

Blank 3: have followed

Blank 4: have always been

Blank 5: didn't / did not have

Blank 6: rose

Blank 7: remained

Blank 8: has risen

Blank 9: has also increased

Blank 10: has been

Blank 11: has become

Sample answer: