问题:
【题文】They will arrive___________ the morning__________ May 1 st.
A.on;in
B.on;on
C.on;of
D.in;of
【题文】They will arrive___________ the morning__________ May 1 st.
A.on;in | B.on;on |
C.on;of | D.in;of |
参考答案: