First of all, this difficult problem has t
题型:单项选择题
问题:
First of all, this difficult problem has to be tackled, thus ______ us to proceed to the others.
A.to enable
B.enabled
C.enabling
D.having enabled
First of all, this difficult problem has to be tackled, thus ______ us to proceed to the others.
A.to enable
B.enabled
C.enabling
D.having enabled