1.Dinosaur skeletons show a strong similarity____modern reptiles 2.We've come _____serious problem in finding the right person for the job 3.you should take _____yoga to strengthen your muscles  4.you ought to cut ______ sweet things, and cut ______ chocolate completely 5.why don't you give _______smoking altogether? you know it's ad for your health 6.if none of you is going to wear these clothes,I'll throw them _______or donate them to charity  7.I knew nothing about the treasure hidden in my garden .I came _____it while I was digging the earth  8. there was no sign indicating that the cottage had been broken______yet, the owner was sure his precious paintings had been stolen. 9. Catherine was absent _____school yesterday 10. My doctor doesn't approve _____smoking