Once new difficulties __________ in your work, it's always important to use your brains.
English for more than six years, he can speak and work very well with that businessman from England.
—Is there a letter for me? —Yes, came for you this morning.
When the audience heard the alarm, they all hurried to they thought was an emergency exit door.
He sent me an e-mail, ______ to get some further information for his research.
_______ is our belief that improvement in health care will lead to a stronger, more prosperous economy