问题
During the summer holiday， some students will plan to go to Dalian by _______ sea and camp by _______ sea.
A:was used to; used to
B:got used to; is used to
C:used to; is used to
D:used to; used to;
B:got used to; is used to
C:used to; is used to
D:used to; used to;
正确答案是：
