问题
选择题
. _____ with letters and public phones, mobile phones and the Internet are faster and much more convenient.
A．Compare
B．To compare
C．Comparing
D．Compared
答案
答案：D
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. _____ with letters and public phones, mobile phones and the Internet are faster and much more convenient.
A．Compare
B．To compare
C．Comparing
D．Compared
答案：D