完成句子,根据汉语提示完成下列句子
We have to ___________ _________ ________(想出) some new ideas to solve the environment problems.
The police found the lost car ___________ ________(偶然地).
Watching the new TV play Yimeng_____reminded_______ ____________(使我想起)my hometown.
I ________ _______ (有困难)in learning grammar and memorizing new words.