选择一个正确答案1.It _______ten years since his father died.A:is B:w

选择一个正确答案
1.It _______ten years since his father died.
A:is B:was C:had been D:will be
2.He ________fo ten years.
A:has joined B:has been in the army C:joined D:has served the army
3.As we know,hard work ______success.
A:results to B:results from C:results D:results in
好的有分!