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.