1.Every evening after dinner if not ▁▁▁ from work,I will spe

1.Every evening after dinner if not ▁▁▁ from work,I will spend some time walking my dog
A being tired B tiring C tired D to be tired
2一般表达：You should put your heart into making friends.高级表达：（把上面句子改成否定疑问Wouldn't it be a good idea if...）
3.一般表达：We all know that friendship calls for time and effort.高级表达使用形式主语改写