I am afraid she never participates in any of our discussion,____?[ ]

He loves his parents deeply, ________ are very kind to him.

We ________ for over 2 hours. Are you sure this is the right way

The news shockedthe public, _____ to great concern aboutstudents’ safety at school.[ ]

He ____ to lend me his bike but I refused, for I didn’t want to trouble him.