1-5 BDDBD

　　6-10 ACBBD

　　11-15 CCBAC

　　16-20 BDBCD

　　21-25 BBBBA

　　26-30 BBBDC

　　31 death 32 succeed 33 waste 34 throwing 35 realized 36 spend 37 playing 38 to play 39 be allowed 40 to do 41 Have had 42 largest 43 to feed 44 thousands 45 is known 46 Did use 47 How does 48 How to 49 if visited 50 heard to 51 instead of 52 have cut 53 take pride in 54 is regarded as

　　1-5 BDCCA 6-10 CAAAD 11-15 DBCAB 16-20 DDCAA

　　21-25 BCBAD 26-30 ADCAA

　　31 happy 32 me 33 boating 34 enjoyed 35 relaxing 36 graduating 37 favorite 38 later 39 to start 40 grow 41 Would like 42 What kind does 43 to go 44 too young to 45 is bad for 46 let down 47 as as possible 48 to deal with

　　1-5 BCBDA 6-10 DAAAB 11-15 ABBAC 16-20 ACAAA 21-25 BCCDB

　　26 lend 27 trouble 28 wonder 29 scientific 30 endangered 31 caused 32 cools 33 are 34 become 35 fall 36 found 37 potatoes 38 around 39 were moving 40 scared

　　41 How does 42 usedn’t there 43 can’t afford 44 belong to 45 cheer up 46 Has studied 47 Could please tell 48 was asked built 49 took place 50 Is made 51 Whatever stop 52 been/ got used 53 made sad 54 made thought 55 has concentrated on