lt rained so heavily that we couldn't have a piclt rained so heavily that we couldn't have a picnic.(同义句转换)

lt rained so heavily that we couldn't have a piclt rained so heavily that we couldn't have a picnic.(同义句转换)
lt rained so heavily that we couldn't have a pic
lt rained so heavily that we couldn't have a picnic.(同义句转换)

lt rained so heavily that we couldn't have a piclt rained so heavily that we couldn't have a picnic.(同义句转换)
we couldn't have a picnic because it 's raining so heavily outside.