问题：
[填空题]Look at the same sentence:
Three young teachers taught their first class on Monday.
The phrase "taught their first class on Monday" is what part of this sentence? (watch your spelling!)
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[填空题]Look at the same sentence:
Three young teachers taught their first class on Monday.
The phrase "taught their first class on Monday" is what part of this sentence? (watch your spelling!)
____
