This plant needs watering twice a week.（)

Salty water is generally harmful ______ plants.A、forB、toC、withD、over

She______ to the supermarket twice a week.A、goesB、goC、wentD、gone

A．Once a week.B．Once a month.C．Once every two weeks.D．Twice a week.

A．The students attended class twice a week.B．Men were quite active during the classes.

This young man has been losing weight by working out at the gym at least twice a week.A．ma

— ___________________— Once or twice a week.A How