Tom asked me for a __________.But I was too busy to help him.(favourite)

Tom asked me for a __________.But I was too busy to help him.(favourite)
Tom asked me for a __________.But I was too busy to help him.(favourite)

Tom asked me for a __________.But I was too busy to help him.(favourite)
填favour
是favourite的名词形式,意思是帮助.
整句话的意思是：汤姆让我帮他一个忙,但是我太忙以致不能帮助他.