4. The box was too heavy to be easily r_______. 5. A bomb e______ suddenly and destroyed the building. 6. The German ship was attacked and s____. 7. China is a developing country which b_____ to East Asia. 8. It is said that policemen are in s_____ of the lost boy along the river. 9. There is no d____ that Liu Xiang will win the competition. 10. I sent a watch to my mother for her birthday, which is w____ 1,200 yuan.

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