小题1:How long may/can I keep this book?
小题2:Yang-Tai Airport has been in use/service for a month/since a month ago.
小题3:I am/was so weak that I can’t/couldn’t walk any further/farther.
I am too weak to walk any further/farther.
小题4:I hope a lot of pop stars can be invited to the show.
小题5:It’s meaningful for us to donate money to the people in need.
小题1:考查动词的用法。borrow是短暂性动词，不能与一段时间连用，应该转换成keep。故翻译为How long may/can I keep this book?
小题2:考查固定短语和完成时。in use“在使用中”；for+一段时间或since+时间点，与现在完成时连用。故翻译为Yang-Tai Airport has been in use/service for a month/since a month ago.。
小题3:考查固定句型。so...that...“如此......以至于......”，相当于too...to...“太......而不能......”。故翻译为I am/was so weak that I can’t/couldn’t walk any further/farther.。 I am too weak to walk any further/farther.
小题4:考查hope的用法。hope后跟that从句，that可省略。sb. be invited to...“被邀请到......”。故翻译为I hope a lot of pop stars can be invited to the show.。
小题5:考查固定句型。It is+形容词for sb. to do sth.“做某事对某人来说怎么样”。meaningful“有意义的”。donate money to sb.“捐钱给某人”。in need“有需要的”。故翻译为It’s meaningful for us to donate money to the people in need.。