Question

Please choose the correct option to fill in the blank.

Q) Speed cameras in cities _______ to reduce accidents.

A. are being shown
B. were being shown
C. were showing
D. have been shown ​

Answer 1

The correct options are A i.e. Are being shown, B i.e. Were being shown, and D i.e. have been shown. All the options are correct here in this question except the option C.  

Explanation:

• The sentence thus becomes as –  
• Speed cameras in cities are being shown to reduce accidents.  
• This makes sense as the cameras are till attached.  
• Speed cameras in cities were being shown to reduce accidents.  
• This makes sense as the results were from the past.  
• Speed cameras in cities have been shown to reduce accidents.  
• This again makes sense as the results are continuous from a long period of time.