问题
选择题
— Have you received any phone calls from your sister?
— Not yet, but we ______ to get in touch with her ever since she left us. [ ]
A. have tried
B. tried
C. are trying
D. have been trying
答案
答案:D
— Have you received any phone calls from your sister?
— Not yet, but we ______ to get in touch with her ever since she left us. [ ]
A. have tried
B. tried
C. are trying
D. have been trying
答案:D