问题
选择题
.It is reported that two exhibition centres, ____are being built in my city, will
open next year.
A．they both
B．both of which
C．which both
D．both of them
答案
答案：B
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.It is reported that two exhibition centres, ____are being built in my city, will
open next year.
A．they both
B．both of which
C．which both
D．both of them
答案：B