A-A+

Many a young scientist ______ engaged in the r

2022-08-06 20:23:30 问答库阅读 181 次

问题详情

Many a young scientist ______ engaged in the research work.
A．have
B．has
C．have been
D．has been

正确答案：D
解析：many a+名词单数是复数意义，单数形式，谓语应用单数形式。另外，be engaged in是固定搭配，表示“忙于，从事于”。