问题
My friend Amy _______ text messages to me on the mobile phone, but now she _______ e-mails on QQ.
A:is used to send; used to send
B:used to send; is used to sending
C:used to send; used to send
D:is used to sending; used to send;
B:used to send; is used to sending
C:used to send; used to send
D:is used to sending; used to send;
正确答案是：
