His grandfather ____ ____ a lot of hardships during the war.

下列句子中划线的成语使用正确的一项是 （        ）

句型转换。
(1) Why don't you play basketball with us?(同义句)
____  ____  play basketball with us ?
(2) There is something wrong with my computer. (同义句)
My computer  ____  ____ .
(3) My friend will arrive in four hours.（对划线部分提问）
____ ____ will your friend arrive?
(4) Does he go to the cinema every weekend?(用next week改写)
____ he____ to the cinema next week?
(5) We will have a sports meeting next week. (改为否定句)
We ____ ____  a sports meeting next week.   

组成一个三角形需要3根木棒，现在要摆7个三角形，写出乘法算式____，