康明斯ISL8.9E5发动机ECM上的接头数量为（）
A、1个
B、2个
C、3个
D、4个
参考答案：C
用所给单词的适当形式填空。
1. Does your brother often go ____ (swim) in summer?
2. Look! Some students ____ (climb) the hill.
3. He ____ (do) his homework on weekends.
4. My mother often watches TV after supper.
But now she ____ (not watch) TV; she ____ (wash).
5. When ____ your mother usually ____ (get) up in the morning?
=（）
A．
B．
C．
D．
=（）
