---Would you like to go for a walk with us? --- , but I’m too busy.
—Do you think if we will go to the movie tomorrow? —I think we’ll go if we ___________ too much homework.
Listen! I hear some birds ___________ the tree. A. sing in B. singing in B. sing on D. singing on
The girl was flying a kite ____________ her father came back.
Many people are _____________ in the ____________ story.
We don’t know how to remember these English words. Can you give us ____________?