问题

The city ____ by an army of 600 menwas difficult to take.
A:defending
B:to defend
C:having defended
D:defended
B:to defend
C:having defended
D:defended
正确答案是:
同类题型
Why were you late for the show — It was rush hour. There was _______ traffic on the road.
sir, but you can’t go any furtherwithout______boarding pass. Please obey ____ rule.
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