Whensheknewthatthedinosaureggsarrivedatthemuseumsafely,...

问题详情：

When she knew that the dinosaur eggs arrived at the museum safely, she smiled　　　.

A. in doubt                                                            B. in relief

C. in peace                                                                  D. in return

【回答】

B

知识点：介词

题型：选择题