问题

I know one of the things I was unsure about was _____hard it would be to climb this mountain
A:an;the
B:/;the
C:an;/
D:the;a
B:/;the
C:an;/
D:the;a
正确答案是:
同类题型
mind if I smoke here—_______, actually.
e works seven days a week, and sixof _____ until one o’clock at night
How was your day off during the Qingming Festival— Pretty good! We XuXiaoxuan’s former home.
No matter how I tried to read it, the sentence didn’t _____to me.
Somebody ______the blackboard—Well, it wasn’t meI didn’t doit