Ngữ pháp Tiếng Anh Lớp 11 Global Success - Present and past speculation (Có đáp án)

Answer key 
1 
1 A 
2 B 
3 C 
4 B 
5 A 
6 C 
2 
1 can’t have had 
2 may have gone 
3 must have known 
4 could be 
5 might not want 
6 couldn’t have lost 
7 can’t be 
8 must have forgotten 
3 
Model answers 
1 My friend may be at the shops now. 
2 My teacher wasn’t at school yesterday – he might have been sick. 
3 My mum can’t be at home now – her car isn’t there. 
4 My dad isn’t at home. He could be at work. 
5 My sister couldn’t have got an A on her test – she isn’t a good student! 
6 My brother didn’t study for his History test yesterday – he must have forgotten about it! 
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