Directions:Fill in the blanks with the words given below.Cha

Directions:Fill in the blanks with the words given below.Change the form where necessary.Write your answers down on the Answer Sheet.
appear mystery please curious survive practice threat energy cruel health courage experience large efficient perform
31.No one knows where he came from.There is something _______ about his family background.
32.Mary was already an _______ primary school teacher at the age of 25.
33.His _______ is still uncertain; he has been very badly hurt and may die.
34.Your suggestion is a good one,but there are some _______ difficulties in our workshop.
35.Their lives were frequently _______ by gas explosion.
36.Everyone looked fresh and _______ after the three-day spring break.
37.The first American _______ of this opera was in 1926.
38.It was _______ of Mr.Stone to try and save the drowning man.
39.The factory is being _______ to make room for more machinery.
40.You will increase your _______ if you introduce more system into your work.
41._______ to children or animals is a crime in many countries.
42.If you use this chemical to clean your shirt,the stains will _______ immediately.
43.The children looked wonderfully _______ with their bright eyes and glowing cheeks.
44.The success of the experiment was a great _______ and encouragement to the young scientists.
45.Looking up,I saw his eyes fixed on me in _______.

31 mysterious
32 experienced
33 health
34 practical
35 threatened
36 energetic
37 performance
38 courageous
39 enlarged
40 efficiency
41 Being cruel
42 disappear
43 pleased
44 survival
45 curiosity
Good Luck