—Has Sam finished his homework today?—I have no idea. He ________ it this morning.
#104746
A
did
B
has done
C
was doing
D
had done
推荐题目
No matter what substance it may be, it is ________ atom.
#101591
A
resulted from
B
formed
C
made up of
D
made up with
(2013·高考浙江卷)When the group discussion is nearing its end，make sure to ________ it with important points.
#99686
A
conclude
B
lead
C
avoid
D
hold
It was not until then that I came to know that knowledge _______ only from practice.
#100974
A
had come
B
has come
C
came
D
comes
Dear me! Just _________ at the time! I _________ no idea it was so late.
#104721
A
look, have
B
looking, had
C
look, had
D
looking, have
The students busily when Miss Brown went to get the book she in the office.
#101482
A
were writing; left
B
wrote; had left
C
had written; left
D
were writing; had left