问题
The children were warned of not being too______ about things they were not supposed to know
A:may have been
B:would have been
C:must have been
D:should have been
B:would have been
C:must have been
D:should have been
正确答案是：
同类题型
I’d like to introduce my best friend to you ,Peter .—- Thank you , Lucy . But we __________already .
“I promise that she _____ get a nicepresent on her birthday” “Will it be a great surprise to her”
have you been at this school –For three years．
Were you at home at 8:00 last night I called you but nobody answered.— Sorry, I a nap at that time.