问答题小学英语课程设计原理和思路是什么
问答题遗传
单项选择题Only twenty percent of the work () done yesterday.
A. has B. was C. have D. were
单项选择题—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job — () my students have a try
A. Shall B. Must C. Will D. May
单项选择题—Will you be able to finish the job this week —______.