Nothing but some ancient Chinese coins in the sunken ship since they began the exploration.
问题描述：
Nothing but some ancient Chinese coins in the sunken ship since they began the exploration.
Nothing but some ancient Chinese coins in the sunken ship since they began the exploration.
A.were found B.has been found \x05\x05
C.had been found\x05D.have been found
答
B nothing but+名词作主语谓语用单数 且有since应用完成时