Vocabulary, bi- words

It is better to be ______________ than to speak just one language. 

What does the prefix bi- mean?

A duck, kangaroo and human are examples of this.

This word describes a plane that has two sets of wings. 

If we go on a field trip six times a year, how often do we go?

My book club delivers a book _____________, or every other week. 

This word describes a dress that has two colors. 

What do dentists sometimes have to pull out?

What would you call a vehicle with two wheels? 

If I go on vacation this year, skip next year, go the year after that- how do I vacation? 

My eye doctor made me a new pair of _______________, so I can see both near and far.