In the west, people make _______ a rule to send Christmas present to their relatives and friends.
. There ____ be a flight for Kunming this evening, but you’d better find it out for sure.
Though ____ many times, the song still sounds as nice as before
. ---I don’t believe you’ve already finished reading the book. ---I ___ it to you this morning.
. It turned out to be a good harvest of wheat this year, ____ lack of rain.
---Excuse me, Sir, could you tell me how to go to the railway station? ---Sorry, you’d better ask, I’m afraid, ____ is a native.