单项选择题
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
单项选择题 （）in the open air has given you a good color.
单项选择题 The river （） to the east. It is the second longest river in the country.
单项选择题 "The ceremony has already started." "Look! The flag（）now."
