ould report any incident, ______ minor it is

He has ___ letters to answer and has to work from morning to night. [ ]

I feel it hard to keep up with my classmates. But whenever I want to ， my teacher always encourages me to work harder.

In the reading room, we found her seated at a desk, her attention ____ on a novel.

Leif followed Biarn’s directions and sailed to _______is believed to be the coast of present-day Canada.