單項選擇題

Look! The boy （）a model ship and he （） it in the lake now.

A.made；is sailing
B.has made；is sailing
C.made；sails
D.has made；sails

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單項選擇題

（）in the open air has given you a good color.

A.Work
B.Worked
C.Working
D.To be working

單項選擇題

The river （） to the east. It is the second longest river in the country.

A.runs
B.is running
C.run
D.ran