I am not sure        .
#35720
A
always
B
still
C
never
D
yet
推荐题目
        English well, one must have a lot of practice.
#35397
A
Speak
B
To speak
C
Spoken
D
Speaking
He said that he had waited for ________.
#36168
A
one and a half hours
B
one and half hour
C
one and the half hour
D
one and half an hour