1. —Can you connect the keyboard______ the computer?
—Yes, I can.
A. to B. on C. in D. for
【解析】选A。前句句意：你能把键盘连接到电脑上吗？connect. . . to. . . “把……连接到……上”，根据结构可知选A。
2. I have a laptop ______ I don’t often use it.
A. and B. so C. or D. but
【解析】选D。句意：我有一个笔记本电脑，但是我不常用。前后两个分句之间有转折关系，故用表示转折的并列连词but。
3. August (八月) is the ______ month of a year.
A. ninth B. eightth
C. nineth D. eighth
