A warm thought suddenly came to me _______ I might buy some flowers for my friend's mother’s 60th birthday.
Would you be ___ to show me the way to the Summer Palace?
Sometimes our opinions differ _________ what we choose to observe and how we deal with what we’ve observed
“You went late _________ the stadium yesterday evening, didn’t you?” “Yes, my wife was a little late _________ the supper.”
Would you tell me what subject you were good _____ school?
I asked him what he hoped _____ his birthday.