How was his explanation at the court?— So convincing ______ that I entirely approved of it.

The driver made a phone call while driving ______ he had a bad accident and hurt himself seriously.

I think the environment is becoming worse and worse.— Yes, I really don’t know we can do about it.

Though the clothes are _____strange, they are the clothes that the people in that area wear daily[ ]

____ in wet sand, the vegetables can ______ fresh for a long time.