Complete the sentences with the given words in their proper forms（用括号中所给单词    的适当形式完成下列句子） (共8分）
Tim’s uncle plans to have his          birthday party next week. (thirty)
It is          that such a hardworking student should pass the exam. (nature)
My cousin moved to a larger flat with three          last Saturday. (balcony)
Carl did badly in the maths test, but Ben did even ________. (baD.
Tom’s mother is a waitress. She always speaks          to her customers. (gentle)
We haven’t found the          yet, but I’m sure we’re on the right track. (solve)
The computer          people to communicate with each other more conveniently. (able)
Nobody likes to make friends with          persons. (honest)