I. 1c 2a 3a 4c

II. 1c 2sai đề100% 3a 4d

III. 1b 2d 3d 4d 5d

IV. 1c 2c 3a 4b 5c 6a

V. 

1. have been visited

2. has

3. symbolize

4. is celebrated

5. have visited

6. are being prepared

mk k bt có đúng hết k đâu nha ^^

EXERCISE 1 :

1. c                2 ) A                    3)C                       4) C

EXERCISE 2 :

1) C               2) B                3) A                4) D

EXERCISE 3 :

1) B            2) D              3) D            4) C            5) A

EXERCISE 4 :

1) C                2 ) C                   3) A                4) B              5) C               6) A

EXERCISE 5 :

1) have been visited

2) has

3) is symbolized

4) is celebrated

5) have visited

6) are preparing