It suddenly        to the teacher that he hadn’t left any assignments(作业) to his students.
#105150
A
happened
B
occurred
C
thought
D
took place
推荐题目
It was not until Tom took off his dark glasses that I _____ him.
#105123
A
recognized
B
knew
C
discovered
D
realized
2.The flowers were so lovely that they ____ in no time. 
#105264
A
sold
B
had been sold
C
were sold
D
would sell