一个计算器的体积是400____.
一个电冰箱的容积是180____.
看图片完成对话。
A: When is your birthday?
B: My birthday is on____.
A: What will you do on your birthday?
B: I'll ____.
A: Cool! When is your mother's birthday?
B: It's on____.
A: What will you do for your mother?
B: I'll____.(为她做蛋糕)
A: Great!