阅读下面短文，掌握其大意，然后从每题所给的A、B、C、D四个选项中选出最佳选项。
It's lunch time and Mary is very hungry. "Do you want a ham sandwich?" asks 1.
"Yes!" says Mary.
Grandmother looks at her, "I think 2forget(忘记) something," she says.
When they go into the kitchen, Mary thinks and thinks.3 does she forget? Grandmother needs bread! "Here is the bread," says Mary.
"Thanks," says Grandmother. "4you still forget something."
"Here is the ham," says Mary when she5Grandmother to get the ham.
"Thanks. You still forget something." says Grandmother.
"Here6the eggs," says Mary, and she gives Grandmother some eggs.
"Thanks. You still forget something. Do you want a ham sandwich?" Grandmother asks 7.
Mary gives Grandmother8, ham and eggs. What else does she forget? She thinks and thinks. And then she smiles!
"Yes, 9!" says Mary.
"Yes, please. That's a 10word! Don't forget to say it when you need help." says Grandmother. Soon they make the sandwich and eat together.
