The policeman always _____ his post and struggled against the difficulties to protect the safety of the people and their property.
If you don’t ______ your smoking , I will _______ your money supply .
—Did you tell Julia about the result ? —Oh, no , I forgot . I _______ her now.
It _______ to me that we still have many things to do, so I went back to my office at once.
Many of the scientists and engineers are often judged ______ how great their achievements are.
I offered the ______ suggestion of spending the holiday in the mountains or by the sea.