studiously

"Maria is a studious student, always thinking deeply about the topics discussed in class. "

"You must do your homework before you can watch television."

"My phone rings constantly during class, making it hard to focus on my studies. "

"The security guard's quick looking around the store helped him spot the shoplifter. "

"The finish of the school year was a relief for all the students. "

"His parents got him an in with the company."

"From Earth, we could observe maria, the dark, ancient lava plains on the Moon, with just a pair of binoculars. "

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

"I tried to rollerblade, but I couldn’t."

"After their argument, Sarah avoided talking to her brother for a week. "

"He lectured for quite a long while."

"I think this bird is a him, but it may be a her."