three days are还是is enough.和three years is 还是are a long time一样吗

three days后的谓语动词是is还是are? is **days还是are **days three days are还是is enough.和three years is 还是are a long time一样吗 Two days 后面用is还是are? There is three dollars 还是There are three dollars Her grandma is here ( ) three days Afor Bin Cat DbeforeHer grandma is here( ) three days for 还是 in 还是 at 还是 before Seven and three is ten?对吗是is还是are Three days----enough for us to playA is B are C beWhy? Three and a half days () not a short time A is B are the days __ gone.填is还是are? another two days 后面加is还是are five and three are eight .还是is eight more than three qauter ( is 还是are )population , Three apples and one orange后面填is还是are? three tons of coal后面用is 还是are There --------- three pieces of meat .到底填 is 还是are a woman with three boys 后面跟are还是is What day is it in three days'