60. The water can turn i__________________ steam(蒸汽) when it is heated.

 61. They have already i______________ us to dinner.

 62. This dress needs to be i_______________.

 63. He i______________ able to finish the work in two days.

 64. He i__________________ unhappy, isn’t he?

 65. The dog lifted i_________________ head and looked at me.

 66. J________________ is the first month of the year.

 67. She is wearing a white sweater and a pair of j________________.

 68. He has got a good j__________________ in the bank.

 69. Will you come and j_________________ us in the party?

 70. Summer is in June, J________________ and August.

 71. My heart j______________ fast when I heard the exciting news.

 72. The Children’s Day is on J__________________ 1st.

 73. They were in j______________ school before they entered the high school.

 74. He has j________________ come back from school.

 75. Our classroom is very nice. You must k_________________ it clean.

 76. I can’t open my room. I have lost my k_________________ to the door.

 77. We should protect animals. It’s wrong to k ________________ wild animals.

 78. You are k __________________ to us. Thanks for your kindness.

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