Cutting down too many trees ______it _____for people to protect wildlife in the world.

_______ that he picked up French?— It was in 2010 _______ he traveled in France.

Lately some scientists are experimenting _____ white mice to _____ this kind of medicine[ ]

I ________ speak English in class because I’m afraid of making mistakes.—Don’t be shy. Believe in yourself and everything will be OK.

Do you know _an “o” and _ “u” in the word “computer”