He seems to be doing nothing, but _____ he is just waiting for his chance.

--- I’m driving to Jiujiang after breakfast. --- Take care, ______ with all this fog.

“I think the tie beautiful,” I said, “A man can never have ______ many ties.”

The plane got back to the airport and landed＿＿＿＿at last. 

He _____ tasted the mixture and give a smile.