two english questions wanted to elucidate

two english questions wanted to elucidate
1:in the meantime ,the question facing business is whether such research is _a,worh_____b,worh of_ the costs.2:in this experiment ,they are wakened several times during the night .and asked to report what they __a ,have just been dreaming_____b,had just dreamt__.

Worth 与Worthy
1.worthy 可作定语,worth不能 He lived a worthy life.
2.worth 可接表示价值的名词或短语,worhty 不能.The house is worth 100,000 pounds.
3.worth 可接名词作宾语,worthy须加上of才能接名词..The matter is worth( worthy of)consideration.
4.worth 接动名词的主动式,worthy 接动名词的被动式.The museum is worth visiting.=The museum is worthy of being visited
5.worthy 后可接不定式,worth不能.The lesson is worhty to be remembered.
1.b 2.a