1 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Learning Chinese calligraphy     1     (list) as one of the must-do things when I came to China. Now, I’m in the course of learning this unique art,     2     value is considered very high in China, even across East Asia today. It is not only     3     ancient artistic form of human language, but it also reflects Chinese traditions.

As someone who paints, draws, and loves all     4     (create) things, at first, I assumed I would be rather good at Chinese calligraphy. I was     5     (total ) wrong. Using thick brush tips to produce awkward brush strokes (笔画)     6     (be) very difficult for a beginner. I have no idea about the different types of calligraphy and the meanings     7     ( hide) behind each one. Also, I have to hold the paintbrush     8     a very specific way; unlike a pen or pencil, the paintbrush is held upright in the hand. I need to be extra careful when changing the angle or     9     (direct) of the brush, especially if I press too hard on the paper.

After taking the lesson, I now understand the difficulty of calligraphy and that it will take efforts and commitment     10     (master) this art form. Yet, I am grateful to learn such a special Chinese tradition.

2 . A man dressed in a black coat was observed ________ (enter) the house and later the owner found all the valuable things stolen. （所给词的适当形式填空）

3 . ____________ people spend so much money on their pets surprised us a lot.

4 . — I’ll ask the teacher about the attributive clause. I’m very puzzled about it.
— That’s just __________ most of our classmates have doubt.

5 . Our bad living habits will destroy the earth. Only by changing _________ we live can we save the earth.

6 . The manager demanded that his lawyer ______________(call) or he wouldn’t say a single word.

7 . Many of the creatures in Rowling's world are not real, and much of ________ happens is strange.

8 . Not only the swimmers who are in the swimming pool but also the coach ___________(try) to save the drowning girl.

9 . She asked me ____________ I had returned the books to the library, and I admitted that I hadn’t.

10 . The boy dived into the water and after _________ seemed to be a long time, he came up again.