The careless driver is _______ for the trafficaccident_______ yesterday.

It is said that Chinese people_________ to travel to Hongkong freely next year.

They got two free tickets to Canada; otherwise, they’d never have been able to ______ to go there.

When they had finished playing,the children were made to ______ all the toys they had taken out.

Must we finish the work today—________. We have something else to do tomorrow.