A good idea occurred to Mr. Baker_______
题型:选择题
问题:
A good idea occurred to Mr. Baker________ to his invention recently. [ ]
A. while applying
B. while applied
C. while he was applying himself
D. while applying himself
A good idea occurred to Mr. Baker________ to his invention recently. [ ]
A. while applying
B. while applied
C. while he was applying himself
D. while applying himself