The boysknock ___Uncle Wang’s door and shout “trick or treat”. He gives them some candy___a treat.[ ]

It’s difficult——– me to learn English well.

The cinema is far _____ our school. [ ]

It seems that Alice never wants to do anything except draw pictures. — Right. That’s what she likes to do ______.

The scientist’s last words _________us that we should protect the environment around us.