I know one of the things I was unsure about was _____ hard it would be to climb this mountain.
#66039
A
what
B
that
C
however
D
how
推荐题目
— Don’t forget to close the door when you leave the room.— No, I .
#59448
A
don’t
B
won’t
C
mustn’t
D
can’t
＿＿＿these ancient buildings in this city are!
#66274
A
What perfectly protected
B
How perfect protected
C
How perfectly protected
D
What perfect protected