It is difficult to find the optimal solution to this problem.

He was solving the exam questions without looking away.

He was sitting on the chair reading a book.

His residence is in Tokyo.

The hem, which is the formal wear of court nobles, is long.

It is very cold today.

I feel exhausted from studying for a long time.

My living room is very spacious.

I ended up cohabiting with him.

The police have started an investigation to identify the unidentified decedent.