1 There is a mistake in each sentence. Find it and write the correct sentence. 1) Olha passed all her exams this summer.
 2) I was working hard in the garden when I see Dad.
 3) They visit their mother before they left.
 4) She has written a test last week.
 5) Last week, he was arriving at Heathrow Airport.
                                                                                                
                            
                            
                            
                                
                            
                            
                                
                            
                            
                            
                         
                    
Объяснение:
1) Olha has passed all her exams this summer.
2) I was working hard in the garden when I saw Dad.
3) They had visited their mother before they left.
4) She has written a test last week.
5) Last week, he had arrived at Heathrow Airport.