Circle the letter A, B, C or D to indicate the underlined part that needs correction in each of the following sentences.

61. I. can see there is a vase behind of the light.

           A           B            C               D

62. The air in the country is more clean than the air in the city.     

         A                      B                C                                      D

63. Can you telling me the way to the railway station?    

                     A                     B           C                     D

64. Take the one left and the market is on your right.  

       A             B                      C                             D

65. Ho Chi Minh City is crowdeder than Da Nang City.  

                             A             B             C                        D

66. How much tables are there in the classroom?

                  A                B           C               D

67. Nick and Tom often plays volleyball with their friends after school.

                                             A                        B                    C                 D

68. You must taking off your shoes before entering this room.

                           A           B                  C                     D

69. Shall we going camping next Sunday?

                A    B       C               D

70. We are understanding our today’s lesson now.

                          A           B      C                  D

Tìm các số nguyên x sao cho:
x – 2  là ước của 3x – 2

Tìm các số nguyên x sao cho:
 2x – 3 là bội của x + 1               

tìm X
(5x - 10) . (6x + 12) = 0 

a 1
b 2
c 3
d 4
e 5
f 1235136214213213213111111111111111111111111111

B

hai số nguyên tố cùng nhau là gì

1 Có phải số nguyên tố ko

121 - 21 X ( 2³ - 3)