Условие задания:

3 Б.
Read these sentences and choose the correct answer. In some sentences there are two right answers.
   
1.  _______ I wait for her or not?
    
 
2.  Which countries ________ you go to if you travelled round the world?
    
 
3.  They _______ do more exercises.
    
Источники:
english.eagetutor.com