I suggested my father that we________to Dalian for a holiday this summer，but the expression on his face suggested that he________to it.[ ]

Jim, do you know the reason _____ Bob kept silent during the discussion—I guess he was thinking about his sick dog. It might be dying.

I failed in the job interview and only then _____ the importance of learning English well.

It _________have rained last night, for the ground is wet.

You should put on the notices ______ allthe people may see them.