Use the past modal verbs to complete the sentences: 1. You're stupid. You __________ (drop) my phone. 2. It can't be possible. I __________ (check) my work yesterday. 3. You're lying. I've just seen him. He __________ (go) on holiday.

1. You're stupid. You ___shouldn't have dropped_______ (drop) my phone. (should have+pp: thể hiện sự trách móc hoặc sự hối tiếc)

2. It can't be possible. I _____must have checked_____ (check) my work yesterday. ( must have+pp: phỏng đoán sự việc chắc chắn xảy ra trong quá khứ)

3. You're lying. I've just seen him. He ____can't have gone______ (go) on holiday. (can't have+pp: phỏng đoán việc không thể xảy ra trong quá khứ)

* Past model verbs gồm: shoud have +pp, must have+pp  và can't have+pp