I didn’t quite follow him because he explained the theory _____that is too abstract for me.
He looked at the envelope and _________ Jenny’s handwriting immediately.
_____ to his work, the scientist didn’t get married all his life.
Our leader insisted that the plan _________ reasonable and we _________ it out.
Mr Smith is a boss, _____ factory my uncle is working.
--So you missed the important meeting yesterday?--_________. I got there five minutes before it was finished.