词汇，根据句意和提示写出单词，完成句子。

He ________(nod)to me in greeting when I entered the room．

词汇，根据句意和提示写出单词，完成句子。

Last year, I took my first direct ________(fly)from Yancheng to Taiwan．

词汇，根据句意和提示写出单词，完成句子。

Our government has realized the ________(important)of education and decided to spend more money on it year by year．

词汇，根据句意和提示写出单词，完成句子。

Seeds are often ________(spread)by the wind．

用所给词的适当形式填空。

First they should work out the time ________(careful)．

用所给词的适当形式填空。

I went to buy the tickets, but there was none ________(leave)．

用所给词的适当形式填空。

He livesas ________(happy)asbefore．

用所给词的适当形式填空。

I have difiiculty ________(talk)with my parents．

用所给词的适当形式填空。

He ________(hear)from his pen pal last week．

动词填空，用括号内所给动词的适当形式填空。

To prevent the things getting worse, action should ________(take)at once．