选择方框中的情态动词填空。

We ________ cross the road if the traffic is busy.

选择方框中的情态动词填空。

You ________ listen to your teacher carefully in class.

选择方框中的词填空。

But the difficulty is to ________ the killing.

选择方框中的词填空。

There are many ways to ________ animals in danger.

选择方框中的词填空。

Pandas enjoy ________ bamboo.

选择方框中的词填空。

You can ________ some advice to protect our earth.

选择方框中的词填空。

We ________ a pen for writing.

选择方框中的词填空。

It's not right to ________ animals for meat.

选择方框中的词填空。

They are ________ about animals in danger.

选择方框中的词填空。

People need to ________ the animals live in peace.