问题

Whilebuildingatunnelthroughthemountain,______.[ ]

A: anundergroundlakewasdiscovered
B: therewasanundergroundlakediscovered
C: alakewasdiscoveredunderground
D: theworkersdiscoveredanundergroundlake

正确答案是：

同类题型

A latest English newspaper, please!—Only one copy left. Would you like to have _______, sir

Mariousedto_____________inthemorning.

It is the greatest happiness on earth______. [ ]

Even students withintelligencecan be excellent students after improving their study habits

We must ________ourselves _______our work.