用所给动词的适当形式填空：
An artist was a very kind man ,although he ( ){not,have}much money .One day ,while he ( ){come} home by train ,he ( ){give} his last few coins to a beggar,but then he ( ){see} another one ,and ( ){forget} that he ( ){not,have}any more money.He ( ){ask} the beggar if he would like ( ){have} lunche with him,and the beggar ( ){say} yes happily,so they ( ){go} into a restaurant and ( ){have} a good meal.
In the end ,the artist ( ){not,be} pay the bill,of course,so the beggar ( ){have}to do so.The artist ( ){be}very unhappy about this,so he ( ){say}to the beggar,"( ){come}home with me in a taxi,my friend ,and I ( ){give}you back the money for lunch .""Oh,no!" the beggar ( ){say}quickly."I( )already ( ){pay}for your lunch,but I( ){not,pay}for your taxi home!"
用所给动词的适当形式填空：
可以根据哪些方面判断动词的时态或适当形式呢?