根据句子中的提示填空。

When we b ________, we draw air into our lungs．

根据句子中的提示填空。

An ________(宇航员)must wear a helmet to protect his head．

根据句意及括号内的提示填空。

As they were the first ________(people who go to live in a new place)on the island, they met many difficulties．

根据句意及括号内的提示填空。

The shopping mall nearby is always ________(having a lot of people)at weekends．

根据句意及括号内的提示填空。

Make sure your computer is ________(be jointed together)to a printer before you print files．

根据句意及括号内的提示填空。

Some leaves are ________(move slowly on water or in the air)on the lake．

根据句意及括号内的提示填空。

China successfully sent its manned ________(a vehicle that travels in space)into space in October, 2005．

根据句意及括号内的提示填空。

Earth and Mars are both ________(large bodies in space that move around a star, eg．the sun)．

根据句子中的提示填空。

This is the most f________(making you feel afraid)story I have ever heard．

根据句子中的提示填空。

The flag is f________(to move slowly in the air or on water)in the wind．