动词填空。1.Manyoftheworld'sinventionshave

问题详情：

动词填空。

1. Many of the world's inventions have__________ __(creat) simply by surprise.

2. Ben _____________(promise) to keep the secret, so he wouldn't tell anyone even though  asked to.

3. He ___________(discover) a pot in the e were 32,000 Chinese metal coins.

4. Ann              (practise)  colour therapy since she left college.

【回答】

1, been created   2. promised

3. discovered  4. has practised

知识点：语法填空

题型：完成句子