将动物双侧迷走神经切断是否能严重影响胰液分泌?为什么?
查看答案
Let's walk to the shops instead of taking the car,________?
A. shall we
B. don't we
C. will we
D. won't we
The travel agency will arrange for us_______at a really nice hotel.
A. stay
B. of staying
C. to stay
D. staying
I don't want______of my parents to know I failed the final exam.
A. either
B. any
C. neither
D. none