10dd tieeps

son doong cave became _known in2009 when it was explored by members of British Cave Research Association[nation]

Education has been _ affected by the war [severe]

they have trained a number of young _for their factory [technique]

scientific _ such as relativity and quantum physics radically changed the worldview of scientists [discover]

a lot of vehicles now can _ the owner and open doors automatically [recognition]

with the advancement of technology ,_application in everyday llife no longer futuristic [robot]

a solar cell indirectly converts the energy in light into _energy[electricity]

if you use this word too often yor text will become _[repeat]

green inventions are _friendly inventions that often involve many aspects[environment ]

Jake said that he would be doing a project at 7o'clock the _day [follow]