I/

 1.C                     2.C                      3.B                         4.C       

  5.B      6.B ( ko chắc lắm :v)        7. D                        8. C

II/

 1.bought    

 2.Did-study

 3. is watching

 4. won’t come

III/

 1.appointment

 2. beautiful

 3. different

IV/

 1.

(-) My sister didn’t visit my parents yesterday.

(?) Did your sister visit your parents yesterday ?

 2. Ủa dấu gạch dưới đâu cậu :D? Ở phần sau “ because …” à?

 - Why was Hoa absent from class yesterday ?

V/

Sorry, mình không biết câu này.