The scientist __________ the experiment for half a year, but he _______ yet.
#102041
A
made; didn’t succeed
B
made; hasn’t succeeded
C
was making; didn’t succeed
D
has been making; hasn’t succeeded
推荐题目
I don't remember who came first,but we all________the lecture.
#99719
A
attend
B
attended
C
have attended
D
are attending
Unfortunately,when I got there,she        ,so we had only time for a few words.
#104545
A
just left     
B
had just left
C
has just left
D
was just leaving
----- Where was I ? ------ You _________you didn’t like your father’s job.
#103414
A
had said
B
said
C
were saying
D
had been saying