Question

用must，might，could和can't完成對話

A：Tina, you look worried. What's wrong?

B：I 1 find my English book. I 2 have lost it.

A：Don't worry. Let's see where it 3 be.

B：I think I 4 leave it in the reading-room. But it isn't there.

A：What's your book look like? Let's look for it together.

B：It's blue.

A：Oh, Look! Is this one yours?

B：No. It 5 be mine. Tom's name is on it.

A：I'm afraid you have to buy a new one.

Answer 1

答案：
解析：

1．can't(找不到了) 　　2．must(表推測，可能性較大) 　　3．could(表推測，可能性較小) 　　4．might(表推測，可能性較小) 　　5．can't(表推測，可能性較大)