根據句子意思，用括號內所給詞的適當形式填空。1．‘I’lldoeverythingIcantohelpyou....

問題詳情：

根據句子意思，用括號內所給詞的適當形式填空。

1． ‘I’ll do everything I can to help you.’ She said with a      (cheer) voice.

2． On the _________ (40) Earth Day, Dr. Wang gave us a talk on the importance of protecting the earth.

3． The foreigner’s Chinese was very poor when he came to China, so he couldn’t make _________ (he) understood.

4．  What an  _________ (please) trip it was! Many visitors felt sick all the way.

5．  The      (explore) of the solar system began in the 19th century.

【回答】

1.      cheerful 2. fortieth 3. himself 4. unpleasant oration

知識點：構詞法

題型：完成句子