请根据所给句子的意思，从下面的方框内选出适当的词，并将其字母标号填在相应的横线上。

1．The baby must be hungry and thirsty．Please give him some ________ to eat and some ________ to drink．

2．Mike and Jack are twins, but Mike is ________ and more ________ than Jack．

3．Could you please bring me an ________ and some ________?I need to send a letter．

4．If you want to improve your English, study it ________ reading aloud and listening ________ tapes．

5．Try to ________ problems as challenges．I believe you'll ________ great progress with her help．