He showed us all the ________（照片）he took in England.

He ________（到工厂）at 7:30 every day. He is usually the last one to leave the factory.

Be careful. There's ________（危险）ahead.

What does the ________（标志）say? It says, “No parking.”

________（保护动物）is to protect human beings.

He ________（不得不）help to clean the lab next Monday.

The boys ________（跑走）as quickly as possible when they found they broke the window.

He ________（扔）some fish to the seals in the pool just now.

Please keep ________（静止的）while I take your photo.

We should protect the animals ________（在野外）.