—I promise her daughter ________ get a nice present on her birthday.
—Will it be a big surprise to her?
A：should
B：must
C：would
D：shall
人类十分重视对遗传变异原理的应用，世界上栽培植物和饲养动物的优良品种都来自我国，如水稻和家猪等，现代育种工作的杰出代表____和他的超级____更是享誉世界．
