This computer doesn’t work properly, because a certain virus has ____ the operating system.[ ]

Steve Jobs, American former Apple CEO and founder,______ a week after birth by Paul and Clara Jobs, was a person who changed theworld.

I don’t understand how he can say that everything is fine _____ it’s so obvious that it’s not

He is naughty sometimes, but ____ he is a good boy

Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet