It was obvious that the ship ______ on its voyage without _______ from the officials in charge or it would not have sailed off so secretly. [ ]

．Shopping online can_____both convernience and choice, but not _____ websites aresafe enoung for shopping.

Be sure to ______ your wife when we go to the party this evening.

How long have you learned English—So far, we ________ English for more than six years.

Washington, a state in the United States, was named _______one of the greatest American presidents