听短文填空。
What
 Susan is interested in 1.__________.
What
Traveling is 2.__________. in her life.
When
This 3.__________, her family are coming to China.
How long
They will stay here for 4.__________.
How
Then they will 5.__________ to Beijing.
1. science   2. an important part   3. July   4. three days / 3 days   5. fly
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