—Don’t put the waste on the ground, young man. —Oh, I’m sorry. I ______ the dustbin there.

A:hadn’t seen B:didn’t see C:can’t see D:wasn’t seeing

—Don’t put the waste on the ground, young man. —Oh, I’m sorry. I ______ the dustbin there.

A:hadn’t seen B:didn’t see C:can’t see D:wasn’t seeing

—Don’t put the waste on the ground, young man. —Oh, I’m sorry. I ______ the dustbin there.

A:hadn’t seen B:didn’t see C:can’t see D:wasn’t seeing

—We didn't see him at the lecture yesterday.—He ______ it.

A:would have not attended B:can not have attended C:needn't have attended D:mustn't attend

I didn’t see him at the meeting yesterday afternoon. He（　）it

A:mustn’t attend        B:can’t have attended C:wouldn’t have attended     D:needn’t have attended