Can a plane fly ________ the Atlantic Ocean–Yes, but it needs to go________ the clouds for hours.

Mr Frank asked me a question________I could go with him to________he called the Treasure House the next week.[ ]

Which of the following doesn’t belong tothe Four Great inventions of Ancient China

_________is going to do the job will be decided by the Party committee.

I ____________ my test paper twice, so I believe my answers are all right.