Đây là 1 câu chuyện của quá khứ (last week) nên ta sd thì qkđ+ qktd

1. decided

2. were waiting

3. started

4. were wearing 

5. didn't have

6. were standing

7. drove

8. waved

9. noticed

10. took

ast week my friend Sandy and I (1)....... to go to the beach on the bus.While we .(2)......  for the bus, it suddenly (3)...........to rain. We (4)...... summer clothes, and we(5) ...  an umbrella.While we (6) ..... there in the rain, Sandy's mother (7).. past, so we (8)...... to her. Luckily, she (9) ... us. and (10) .. us home in the car 
1.decided/was deciding/were deciding
2.were waiting/waiting/was waiting
3.start/ was starting/started
4.was wearing/wore/were wearing
5.weren't having/had/didn't have 
6.stood/ were standing/standed
7.drived/driving/drove
8were waving/waved/was waving
9noticing/noticed/didn't notice
10 took/take/taked

#NOCOPY