When can I use your computer?—Never！________ should you touch it

It has been accepted that all the students ____ put on masks before going to school in case they are infected with flu virus.

In order to ________ the financial storm, many families cut their daily expenses.[ ]

Did your school ______ the basketball match—No. We were_____.

I don’t think he could have done such a stupid thing last night, ___________?