【推荐1】_________ was not until 2016 that he returned to his motherland. (用适当的词填空)

【推荐2】单句语法填空
1. He ________ attend the meeting the day before yesterday, because I saw him enter the meeting room.
2. When ________ earth did you go to see your parents last month?
3. She decided to take the exploration by herself, ________ she knew that it was dangerous.
4. I wonder where ________ was that you lost your credit card.
5. It was my mother who ________（teach）me to be curious about everything around me.
6. This is the ________ book that I have been looking for.
7. I'm still wondering ________ it was that put the Christmas gift under my pillow.
8. There are more than 740 million Chinese people ________（expose）to second-hand smoking in public places now.
9. To their ________（disappoint）, the result was contrary to their expectation.
10. Many diseases arise from ________ people really don't know about in their daily life.

【推荐3】It wasn’t ______ they had a discussion that they made up their mind. (用适当的词填空)