U.S. President announced permission for oil drilling off the shorelines, ________ the country's effort to reduce energy import from foreign countries.
There is no doubt _______ international cooperation is the key to _______ with cyber crime.
Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
It took me quite a long time to ________ the new environment here.
He made another wonderful discovery, ______ of great importance to science.
Would it be ________ for you to pick me up at four o’clock and take me to the airport?