If you have difficulty ______ your bills, tell your utility company as soon as possible.
A. pay
B. paid
C. to pay
D. paying
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Theadvisor was (anxiety)_____about the sub-healthy state of his students and urged them to do more exercise.
Well(begin)____is half done.
These young people are(respect)____to the great playwright.
It may take you some time to grasp the(communicate)_____skill.