---I haven’t seen Jack for days.---I forgot to tell you. He fell ill last week and _____ yet.
—Mary's been offered a job in a university, but she doesn't want to take it.—________? It's a very good chance.
—I'm sorry I made a mistake!—________. Nobody is perfect.
He jumped out of bed and ran to the door to see ________ the parcel was for.
It is important to introduce children to healthy nutritious foods from ________ they begin to eat solids.
Suppose we meet with a situation ________ none of us can deal with, what then?