The computer system _____ suddenly while he wassearching for information on the Internet.

She couldn’t wait ________ home after such a long and tiring journey.[ ]

New comer as you are, if you spend a little more time on your work, I am sure you’ll ________ ahead in the end.

Every evening after dinner，if not ________ from work，I will spend some time walking my dog[ ]

下列各句中没有语病的一句是（ ）