1. Last sunday, we ( not fly )..... to Ho chi Minh city

2. When we ( be )..... young, we ( study ) ..... at a hight

3. I..... ( not / drive ) very fast when the accdent..... ( happen ) 

4. Quynh..... ( clean ) the house while my sister..... ( whatch ) cartoon 

5. Quan..... ( go ) to school yesterday

6. At 1 p.m last night I..... ( Use ) mobile phone

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