This is my first time to come to Ji’nan．Can you me Daming Lake

The split between humans and apes is believed byscientists______15 to 20 million years ago

It’s a good habit to keep everything ________ in your study

That famous progressive thinker was asked to _____ a speech at the meeting.[ ]

A clean environment can help the city bid for the Olympics, ________ in turn will promote its economic development