问题补充:
Do you know the difficulty he has what eco-travel means?
A. understand
B. understood
C. to understand
D. understanding
答案:
A. understand
B. understood
C. to understand
(答案→)D. understanding
解析:可联系答.案.网客服索取。
时间:2019-10-04 16:00:48
Do you know the difficulty he has what eco-travel means?
A. understand
B. understood
C. to understand
D. understanding
A. understand
B. understood
C. to understand
(答案→)D. understanding
解析:可联系答.案.网客服索取。
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