Sam ______ coins since he was eleven yea
题型:选择题
问题:
Sam ______ coins since he was eleven years old, and now he has hundreds of them.
A.collected
B.had collected
C.has been collecting
D.had been collecting
Sam ______ coins since he was eleven years old, and now he has hundreds of them.
A.collected
B.had collected
C.has been collecting
D.had been collecting