The chairman thought __________ necessary to invite Dr. Smith to speak at the meeting.
--- How did you react _____ your father's suggestion ? --- I reacted strongly _____ it .
This problem is said _____ three times.
Smith’s jacket looked just the same as Jack’s, but it cost __________ his.
. --- I'm sorry. I ____________ the bike to you yesterday. But I was too busy at that time. --- Never mind.
I really don't like art , I find his work impressive.