如图,一条水渠的横截面为梯形,上底是2.8m,下底是2m,高是1.5m,这条水渠的横截面面积为____m2?
①What he said ____ me a lot.(使…感兴趣)
②To be ____ , I'm not sure what to do.(诚实)
③I've ____ my new pen. I can't find it anywhere(丢失)
④I can ____ finish the work today.(容易)
⑤You'll miss the train ____ you get up early.(如果不)
他是我的祖父。