Practice Present Perfect Simple vs. Present Perfect Progressive

They --have been playinghave played chess since noon .

He --has fixedhas been fixing his bike for an hour .

We --have been attendinghave attended this course for two months .

I --have been writinghave written several articles this month .

They --have builthave been building three houses in the past year .

He --has practicedhas been practicing the piano every day .

We --have been travelinghave traveled around Europe since June .

She --has been gardeninghas gardened since early morning .

He --has been paintinghas painted five portraits this month .

He --has been preparinghas prepared for the marathon for months .

They --have decoratedhave been decorating their house beautifully .

She --has been waitinghas waited for her friend for half an hour .