I didn't expect that so many people ___ to join in the work.
Students often ______ a lot of difficulties when they communicate with foreigners for the first time.
As we all know, China is a developing country _______ to the third world.
—Joe, will you be free this Sunday? If so, shall we meet and have a chat?—Sounds a good idea. Let ___ stories then. Which of the following has a different meaning?
______ on more clothes, you would not have caught the bad cold.
Mr. Brown is an experienced doctor. He is always _______ in facing with emergency.