【单选题】It says in the Encyclopaedia Britannica that the Bermejo River is a western tributary of the Paraguay River in south-central South America. This is probably true because the Encyclopaedia Britannica i...
【单选题】--When do you have __________to help me with my English? I am reading the Encyclopaedia Britannica, but it is too difficult for me! --You can come to me ___________!