I can well remember that there was a time _____ a deep blue sky, the song of the birds, moonlight and flowers could never have kept me spellbound.
I’ll remind him_______ what he has promised to us so that he won’t forget it.
Frank made a good_______ _on the first interview, so the manager gave him the job.
The doctors has_________ a new idea on the treatment, which is well thought of by his companions.
-----Hi, Peter. Long time no see. -----Oh, it’s you, Jack. I’m sorry I didn’t ________you at first.
________its low cost, the appeal of iron as a building material lies in its strength, its resistance to fire, and its potential to span long distances.