He was promoted to admiral in the navy.

Theoretically, this experiment should succeed.

He was forced to quit sports for medical reasons.

The first half of this year was very busy.

He took the table cover.

What does the tilde in this sentence mean?

Mr. Yabuue is my best friend.

Please refer to the previous example.

I would like to visit Xanadu once.

He is deeply studying about the classification of superphylum in his biological research.