改写句子 按括号中的要求完成句子，每个空格填一个单词。
The boys are playing soccer on the playground now. (改为否定句)
The boys _______________ _______________ soccer on the playground now.
The new cell phone cost me 3,000 yuan. （就划线部分提问）
_______________ _______________ did the new cell phone cost you?
" Can I borrow your bike?” Tom asked me.(改写句子，句意不变)
Tom asked me _______________ I could lend my bike to _______________．
In order to get better grades, we must make a plan. (改写句子，句意不变)
If we want to _______________ _______________ in our study, we must make a plan.
Though there are many difficulties, we will never give up until we find out what happened to the sunk ship of Korea.(改写句子，句意不变)
Though there are many difficulties, we will never give up if the truth of the sunk ship of Korea _______________ _______________ out.