frightfully

"The teacher explained the new math concept quickly. "

"The loud thunder and flashing lightning created a frightful atmosphere during the storm. "

"The drummer emphasized the ands in the song, making the rhythm very clear. "

"Avery puts a sheet over her head, pretending to be a ghost to frighten Emily."

"It will rain today."

"He tried his very best."

"It thundered continuously."

"The weather was extremely hot today; we stayed inside all afternoon. "

"It looks weaker and weaker, the more I think about it."

"My sister learned to write in a very careful manner. "

"The children went to school this morning. "

"The sudden storm flooded the streets, making it impossible to get to school on time. "