He used to visit his parents _____, but he is too busy to call on them now.A every second weeks B every two weeksC every a few weeks D every two week
– I feel nervous before the exam. -- _____ . It won’t be too difficult for you to pass.
He______ his work, otherwise, he wouldn’t be enjoying himself by the seaside.
Mark Twain _____ along the Mississippi River, which was _____ to his writing.
___ in London, the penniless American wandered on the pavement, ___ to find a job to make a living.
---Are you coming to Betty’s wedding? ---I’m not sure. I ______ go to Beijing on business that day.