There’s________rain on the road，so we should drive carefully．

Not until I had arrived home______ my appointment with Michael Smith

It’s too late. I have to go now.—Oh, it’s raining outside. Don’t leave ______ it stops.

Lanzhou is the only capital city that the YellowRiver, the second ________ river in China, passes through.。

I will visit Austria ______ the invitation of myfriend this summer vacation．