Please don't stand up in class until you          .
#39211
A
were told to
B
are told to
C
were told
D
are told
推荐题目
When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
I saw Ken in the meeting room, he ______ Joe for the school magazine.
#36301
A
interviews
B
interviewed
C
has interviewed
D
was interviewing
 Alice likes doing housework. She ________her room every afternoon.
#36782
A
cleans
B
cleaned
C
is cleaning
D
has cleaned