______ dark cloud cannot long hide the sun, ______ no lies can cover up the fact.A．As; asB

Put on dark glasses or the sun will _____________

Frank cannot leave until tomorrow．__________．A.I cannot tooB.I can tooC.

______ is a low，even layer of dark grey clouds，with light and dark patches.A.CirrostratusB

It is going to rain soon, as there are dark clouds _________ our heads.A、onB、beyondC、

______it is long after dark, he is still wearing black sunglasses.A．IfB．AlthoughC．UnlessD．

The government cannot operate effectively______it is free from such interference.A．so long