问题
Is the letter from your mother—Yes.But she ________the letter herself，because she doesn’t even know one word.
A:needn’t have written
B:can’t have written
C:might not have written
D:should not have written
B:can’t have written
C:might not have written
D:should not have written
正确答案是：
同类题型
I’m hungry, Mum. May I have _________
He must be in trouble now. What should I do —______ .he will be OK .
The boys and girls were happily making a snowman, _______ with cold.
I’m sorry, but I didn’t mean to keep you waiting here for a long time. Can you______ me
Being determined is a kind of quality andthat’s ________ it takes to do anything properly.