There are several misprints in this book.

Let's eat lunch in the school cafeteria.

He is in a sinecure.

His painting has a unique stroke, and you can recognize it at a glance.

I often eat alone.

I am enjoying eating alone.

He showed his true colors under difficult circumstances.

Chrysophyta are living in this pond.

Chrysophyta perform photosynthesis underwater, supplying oxygen.

He fell in love with her.