Today is Saturday. The weather is warm and sunny. Bob and Jack go to the park. There are many people there. The girl under a big tree is reading a book. Two boys are playing football on the grass. The girl in a red dress is riding a bike. Two women are talking. The man beside these women is playing with a baby. Bob and Jack are beside the river. They are sitting on the chair and drawing pictures.

⑴It's warm and sunny ____       A. are beside the river.

⑵There are many people ____    B. are talking.

⑶Two boys ____                 C. in the park.

⑷Two women ____              D. are playing football on the grass.

⑸Bob and Jack ____             E. on Saturday.

I control the ball very ________.

①SiO₂﹣→Na₂SiO₃；②CuSO₄﹣→CuCl₂；③SiO₂﹣→H₂SiO₃ ；④CuO﹣→Cu（OH）₂；⑤Na₂O₂﹣→NaOH．

    No one loves me more than my parents, especially my father. My father is stout and strong, severe look on his face and keen expressive eyes. At first sight you may feel him hard____ (approach). In fact, he is very kind and considerate. I believe my father is a____ (talent) man. He decisive and efficient in doing things. By his own talents and years of efforts, he____ (provide) the family with a good social position and a____ (relative) rich life. Besides, he lives in harmony____ others and never quarrels with anyone, so people from all walks of life come to my house, from____ I've gained lots of social experience. But at home he is a strict parent who is hard on me and has high____ (expectation) of me. I can see that my idling away time____ (hurt) him deeply, while if I have done something great and meaningful, such as____ (write) a book, he will be more excited than me. I always remind myself I must go on and on, and never ____ I give up halfway.