Mr Smith, ________ of the ________ speech, started to read a novel [ ]

There are no more birds flying around the lake. But I still think of them from time to time. Here the underlined part means .

Most of __________we call geniuses (天才)are successful only because they have made extraordinary efforts

Have you finished the maths problem?- Not yet, because I find it difficult ______.[ ]

wy days, you have to drivevery to avoid traffic accidents.