HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
1 How did you get there?
2 Who did you go with?
3 Where did you stay?
4 Was the weather good?
5 What did you think about the food
2 the train had just gone
3 the rain had stopped
4 I had forgotten my ticket
5 It had been stolen a week before
6 I had not seen her for ages
7 It had just been cleaned
8 I had already eaten my sandwiches
9 He had never flown before
10 The film had already begun
r=3m
aht=12 m/s
w=?
f=?
v=?
t=?
r=20cm
t=0.2s
aht=?