单项选择题
There used to be a cherry tree in this field,_________
单项选择题 "I'd like to see_________ Mr. Smith, please.""Do you mean_________ Mr. Smith _________stage manager"
单项选择题 _________luck would have it, we arrived in time to catch the 8:00 o'clock flight to Madrid.
单项选择题 _________nothing to eat, he had to go to bed without supper.