1, " I'm sorry I made a mistake.", said he
A: He said he had made a mistake 
B: He told he had made a mistake
C: He apologized for making a mistake 
D: He blamed you for making a mistake 
2, Because the street was crowded with people, I couldn't drive fast.
A: If the street weren't  crowded with people, I could drive fast
B: If the street hadn't been crowded wirh people, I could have driven fast
C: If the street were crowded with people, I couldn't drive fast
D: If the street had been crowded with people, I couldn't have driven fast
3, I don't usually drink coffee in the morning 
A: I used to drink coffee in the morning 
B: I'm used to drinking coffee in the morning 
C: I didn't use to drink coffee in the morning 
D: I'm not used to drinking coffee in the morning 
( câu in đậm là câu trả lời nha)