How many languages will be died before the end of the century?
=> die
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Michael looked deeply hurt and surprised when_____________________ .
_______ has been a topic of continual geological research.
In spite of her abilities, Laura has been_____________________ overlooked for promotion.
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 "______".
Standing on the tip of the cape,____________________ .
______ his brother, Mike is active and friendly.
She asked me______I was looking at.