______ from outer space, our earth looks like a “blue planet”.
______ one of the most beautiful forms of performance art, ballet is a combination of dance and mime performed to music.
Michael looked deeply hurt and surprised when_____________________ .
It is stated in the passage that____________________ .
The phrase "keeps sellers on their toes" in the passage mostly means "______".
_______ has been a topic of continual geological research.
She asked me______I was looking at.
The boat was sailing north when a terrible storm_____________ .
Tom: "___________________ " Mike: "I won't say no!"
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
The word "allocated" in the passage mostly means "______".