—You don’t look well. Are you ill?—No, the mid-term exam is coming and I reading until midnight.
After _______ seemed about five hours,we finally arrived at the beaches,just _______ rubbish and thrown- away plastic bags here and there.
This small mountain village is so perfect a place for holidays that visitors never leave it _________.
UN Secretary-General Ban Ki-moon left for Pakistan this morning, his assistant _________ him there this Friday.
The past two years _______ a sharp rise in oil price,which adds to the burden of auto transportation industry.
Mr. Duncan raised an unnecessary question __________ he then failed to find an answer.