问题
In those days, we had no phones, so we had to keep in touch ________ letters often.
A:with
B:of
C:on
D:through;
B:of
C:on
D:through;
正确答案是：
同类题型
Did you know any French before you arrived in Washington?— Never ____ it, actually.
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1—-You’re coughing badly.Have you gone to see a doctor? —No,but I .