Sofar,thirty-onemajorinfrastructureprojectshavebeencom...

问题详情：

 So far, thirty-one major infrastructure projects have been completed and another 54 are still ________ construction to welcome the G20 summit 2016 in Hangzhou in early September.

A. in                            B. on                          C. above                        D. under

【回答】

D

知识点：介词

题型：选择题