By the middle of the twenty first century, the computer--a necessity in every home.
ক) become
খ) becoming
গ) has become
ঘ) will become
Related Questions
ক) Did they writing books?
খ) Did they wrote books?
গ) Did they write books?
ঘ) Did they have written books?
ক) has worked
খ) had worked
গ) worked
ঘ) would work
ক) I have spoken
খ) He has eaten
গ) I have gone
ঘ) He had spoken the truth.
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