Are you glad to hear from her?--Of course. I dreamed about her several nights.A. What

问题补充：

-- Are you glad to hear from her?

--Of course. I dreamed about her several nights.

A. What if

B. That is to say

C. In other words

D. Believe it or not

答案：

A. What if

B. That is to say

C. In other words

(答案→)D. Believe it or not

解析：考查交际用语。A要是…又如何？B那就是说。C换句话说；D信不信由你；句意：—收到她的来信你开心吗？—当然了。信不信由你，我已经好几天梦见她了。故D正确。