题干
.
Mary had to work at evenings and weekends. Only in this way _____ complete the reports by the deadline.
Mary had to work at evenings and weekends. Only in this way _____ complete the reports by the deadline.
A：was she able to
B：she was able to
C：she has been able to
D：has she been able to
答案(点此获取答案解析）
A
