“a book and a apple”算不算是复数

a book and a apple ? on the desk.句中问号是填are还是is，a book and a apple加起来是负数还是单数？

book a book 什么意思？ have you a book? search for a book Take a book and read it___you finish it. There is a pen and a book in my bag.对吗 a book for history和a book about history区别 the book is a hit a closed book的意思 you talk like a book A squirrel and a crocodile