It is obvious ______ the local government can do to protect the environment for the next generations.

下列词语中没有错别字的一组是（ ）

You don’t seem to enjoy your meal very much.—– Not really, I’m just______

Whose ping pong bat is this?– I’m not sure. I think it ______be Tom’s.

Mum, I play football this afternoon—Sure, but you finish your homework first.