1. My father detests (travel) __travelling_____by bus. 
2-3. I (hear) ___heard____someone call my name when I (shop) ___was shopping___ at the supermarket yesterday.
4. The fence (collapse) ___was collapsed___by the storm last night.
1. Does Ann enjoy (watch) ____watching____ horror movies?
2-3.  I (see) ____saw____the accidents when I (wait) ____was waiting_____ for the taxi. 
4. My wallet (steal) ____was stealing_____ when I went shopping yesterday.

Bạn tham khảo, có sai sót mong giúp đỡ

Hạ

`1` traveling

`->` detest + Ving : ghét làm gì (cực ghét)

`2-3` heard/ was shopping

`->` Thì quá khứ tiếp diễn - when : 1 sự việc xảy ra, hành động khác xen vào

`(+)` S + was/were + Ving

`(-)` S + wasn't/weren't + Ving

`(?)` Was/Were + S + Ving ? 

`4` was collapsed

`->` Bị động - quá khứ đơn : last night

`(+)` S + was/were + PII

`(-)` S + wasn't/weren't + PII

`(?)` Was/Were + S + PII ?

`**`

`1` watching

`->` enjoy + Ving : thích làm gì

`2-3` saw/ was waiting

`->` Quá khứ tiếp diễn - when 

`4` was stolen

`->` Bị động - quá khứ đơn : yesterday