The hen ______ on the grass and ______ an egg yesterday morning.

单项选择题—Can I help you —I'd like to have my package ______, madam.

单项选择题They are ______ to eat Chinese food though they have been in America for years.

单项选择题The students ______ get up early every morning.

单项选择题20世纪教育发展总目标中的“两基”是______。

单项选择题教育改革的核心是______。