-HelloTina speaking. Is that Sam?-- Sorry he isn’t in.A. I amB. That isC. She i

问题补充：

---- Hello. Tina speaking. Is that Sam? ---- Sorry, he isn’t in.

A. I am

B. That is

C. She is

D. This is

答案：

A. I am

B. That is

C. She is

(答案→)D. This is

解析：考查打电话的固定用法。表示“我是…”，用this is…speaking，问“你是…吗？”用Is that….?,句意：你好，我是Tina。你是Sam吗？--对不起，他不在。选D。