... Modal auxiliaries + Perfect infinitive:A. Diễn tả sự suy đoán từ quá khứ1. Must have + P2: Chắc rằng đã- Tom didn’t ... He shouldn’t have driven too fast.I. Complete the following sentences with modal auxiliaries + perfect infinitive1 I. Why didn’t you aked me? I ……………………………… (lend) you some money.2 He didn’t...