One learns a language by making mistakes and _______ them.
--- Where is Jack? I can’t find him anywhere. --- He ______ his homework upstairs.
—I’m sorry I broke the glass. —_____.
Saying “hello” to somebody today can _____ a new friend tomorrow.
However _____ they are designed, pens should function as a tool to write with.
Wouldn’t it be ______ wonderful world if all nations lived in ____ peace with one another?