the loud noise sound that thunder makes
clap of thunder
something that happens very quickly
lightning speed
perfectly
flawlessly
hitting something by accident
running into
"His exceptional abilities may offer ________ insights into how our minds work." / using new methods or achiving new results
groundbreaking
to fasten something such as a door or a container, usually with a key so people don't open it.
locked up
invented a method of doing something / "He even ______ his own language."
devised
to give someone / something a job.
assign
an amount/ sheet of a substance that covers a surface or that lies between two things or two substances
layer
to last for a particular period of time, especially a long period. / "... including the date _______ thousands of years."
spanning
