1 . The engineer ________is talking with my father has just come from abroad. (用适当的词填空)

2 . He often talked about the artists and the paintings _______ impressed him greatly. (用适当的词填空)

3 . He has a son, _____ has gone abroad for further study. (用适当的词填空)

4 . Could you tell me the reason ______ you were late for class last Monday? (用适当的词填空)

5 . Believe it or not, it was in this poor village ________ I spent most of my happy childhood. (用适当的词填空)

6 . Playing computer games is the reason ________ leads to his failure in the exam. (用适当的词填空)

7 . After years of hard work, he ________ (admit) to his dream university. (所给词的适当形式填空)

8 . As you can see by the lakeside, between the two hills ________ (lie) a small village. (所给词的适当形式填空)

9 . Elon Musk has founded many high-tech companies, almost half of ________are expected to direct tomorrow’s world. (用适当的词填空)

10 . It is strongly ________ (建议) that the machines should be checked every year. （根据汉语提示单词拼写）