I volunteer to clean up the park. My brother volunteers to clean up the park.

I volunteer to clean up the park. My brother volunteers to clean up the park.

合並句子

______ _______ I______ _______my brother ______ to clean up the park.

Not only I but also my brother volunteer to clean up the park

意思就是不仅是我，而且我的弟弟也志愿去打扫公园

not only .....but also 不但而且的意思