Professor James will give us a lecture on the Western culture, but when and where __________ yet.
#104603
A
hasn’t been decided
B
haven’t decided
C
isn’t being decided
D
aren’t decided
推荐题目
 He ___________busy yesterday, or he __________you with your experiment.
#100168
A
was; had helped
B
was; would have helped
C
had been; would have helped
D
were; would have helped
--Look! Someone ________ the floor.--Well, it wasn’t me. I went shopping just now. 
#100635
A
had swept
B
has swept
C
was sweeping
D
is sweeping