问题

China’s Silk Road Economic Belt, ____ accomplished, will quicken the economic growth of the countries along the route.

A:as
B:once
C:though
D:unless

正确答案是：

同类题型

Did you ask Sophia for help—–I _____ need to—-I managed perfectly well on myown.

On weekends， I ______ watch TV ______ play computer games.

_________ the fans are waiting for the popular singer outside the concert hall.

Miss Green goes to the doctors ________ Monday mornings.

Mr. Brown said that his car needed