Half an hour has been made full ______ of _____ the problem.
#101674
A
using; studying
B
use; to study
C
to use; to study
D
use; studying
推荐题目
When I come in, I found a strange girl ______in the corner.
#103163
A
seating
B
seated
C
to be seating
D
seat
—Ring me at six tomorrow morning ,will you?—Why that early? I_____.
#100884
A
will be sleeping
B
have slept
C
have been sleeping
D
will sleep
Jack doesn’t smoke now, but he _______ for almost twenty years.
#101447
A
was smoking
B
had smoked
C
has smoked
D
smoked