IV.

1. B 

Thì HTTD : S + is/am/are + V-ing + O

2.C 

horse riding competition: cuộc đua ngựa 

3. A

 young girl: cô gái trẻ

4. A

Cần 1 danh từ =>A

5. A

V,

1.j  

2. i

3.g

4.h

5.f

VI,

1.  (-)  We didn't meet a football player last week

      (+) Did we meet a football player last week?

2.   (-) She hasn't gone to school since 2010

      (+) Has she gone to school since 2010

Chúc em học tốt <3! Good luck! 

IV.

1. B

2. C

3. A

4. B

5. A

V.

1.j 2.i 3.g 4.h 5.f

VI.

1. (-) We didn't meet a football player last week.

(?) Did you meet a football player last week?

2. (-) She hasn't gone to school since 2010.

(?) Has she gone to school since 2010?