1. We can go to the museum today. We can also go there tomorrow. （用eitheror 将两个句子合并为一句）2. It is believed that Loulan was gradually covered by sandstorm from AD 200 to AD 400. （根据上句完成下句） Loulan is believed_ _.3. He didnt go to bed until I came back. （对划线部分进行强调）We can go to the museum either today or tomorrow. to have been gradually covered by sandstorm from AD200 to AD400.It was not until I came back that he went to bed.4. Luckily, wed brought a road map. Without the road map we would have lost o
