问题
I used to _________tests because I was not good at my subjects.
A:will
B:may
C:shall
D:must;
B:may
C:shall
D:must;
正确答案是：
同类题型
The temperature in this mountainous area___ from day to day.
The railway______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
Wendy, don’t waste the food! all the vegetables on the plate.
According to the new plan, students can choose the teacher __________ class they wish to take.