In 1492, Columbus_______ on one of the Bahama Islands, but he mistook it for an island of India. A lands B landed C has landed D had landed
When it was his turn to deliver his speech,________,he walked towards the microphone.
In order to meet the demands they had to________production.
After he retired from office,Royers________painting for a while,but soon lost interest.
________China has successfully launched its Shenzhou Ⅵ with two astronauts in it has shocked the world.
Come and see me whenever________.