Transform the given sentence as directed choosing the best option. Someone seems to have made a terrible mistake.
 (Change to passive) 

Manthan is watering the plants.
 (Change into passive voice)

Identify the appropriate choice in changing thr voice of the following sentences. She was knitting a sweater at that time.

Identify the appropriate choice in changing the voice of the following sentences.
 India had eradicated smallpox by 1975.

Please help me. Change the voice.

पृथ्वी की उपसौर स्थिति किस महीने में होती है ?

संचार उपग्रह किस वायुमण्डलीय स्तर में स्थित होते हैं ?

'छप्पन मैदान' का सम्बंध निम्नलिखित में से किस नदी से है?