He certainly ought to be ()(提升).

You ought to be more careful, you know.（英译中)

______ dull he may be, he is certainly a very successful top executive.A．AlthoughB．Whateve

Tom ought not tome your secret, but he really meant no harm.A．have toldB．tellC．be tellingD

He promised me a letter; he ought to ______ it days ago.A．have writtenB．writeC．had written

______ dull he may be, he is certainly a very successful top executive.[2006]A．AlthoughB．W

I______to him because he phoned me shortly afterwards.A．ought to have writtenB．couldn"t ha