这个男孩很聪明，他能很快解出这道数学题．
The boy is enough to work out the math problem ．
When Bria was 8， she started painting （picture） of animals．
Everyone in the word should focus on the air （pollute）．
They shouted （happy） when they have climbed the top of the mountain．
Keep studying hard you'll become a top student sooner or later．
Mother's Day， every restaurant is filled with families．