---How can we reduce CO2 in our home? ---It’s easy.______off your TV or computers when you’re not using them, and you’ll greatly reduce it.
It's clear that neither he nor his parents______ the plan put forward at the family meeting.
She has worked at the bank for many years,nine ______.
The plane cannot ______ or land safely every time.
______ Chemistry is a branch of Chemistry.
Every means ______ tried but without any result.