They don’t feel safe in our town at nightbecause it so dangerousThere’s a robbery every week now

下列各句中，有语病的一句是（ ）

Each of the students, working hard at his or her lessons, _________to go to university.—So do I.

are efficient and convenient, but the best wayto __________ a message is still to talk it out in person.

My computer began to return to the ________ running state after I killed the virus. [ ]