请根据所给汉语提示，完成下列各句。(每空一词)
1．我们经常在造句时遇到困难。
We often _____________ ____________ (in) making sentences.
2．他父母没有放弃过帮助他。
His parents didn't _____________ _____________ helping him.
3．她的新书上个月出版了。
Her new book ____________ last month.
4．要是我们那样做了，我们将会更多注意衣服。
If we did so, we would ____________ more ____________ our clothes.
5．我更喜欢古典音乐而不喜欢流行音乐。
I ____________ classical music ____________ pop music.
