To qualify yourself for this kind of new job, I recommend that you some online courses.
It is hoped that these new discoveries will throw ____ light upon such ____ mysterious natural phenomena.
My bicycle is nowhere to be found. Who ___ have been using it?
He cut off the electricity immediately he found the dangerous situation, thus ____ a fire accident.
But at other moments you will find him gentle and weak, _____ he cries about the lost lives of people drowned in ships that have sunk.
They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.