选择适当形式填空 please get the baseball for （we） tom and dale are （classmate）

选择适当形式填空:
1.Please get the baseball for _____（we).
2.Tom and Dale are ______（classmate）.
3.My brother ____（have）a ping pong ball.
4.Jim _____（love) his parents.
依次应填：
1.us
2.classmates
3.has
4.loves