在Dreamweaver中，需要哪三个参数来加入一个Shockwave影片（）
A.位置
B.宽度
C.高度
D.长度
参考答案：A, B, C
— What are you doing?
— I am ____.[ ]
A. singing
B. sing
C. sings
-What time are you planning to ________ tomorrow?
-It's up to you.[ ]
A．set off
B．put off
C．turn off
D．take off
