The students _______ their homework carefully when the teacher walked into the classroom quietly.
#36148
A
do
B
did
C
are doing
D
were doing
推荐题目
---They say there is a new restaurant nearby.---Yes, and it__________ for no more than a week.
#39537
A
has been open
B
opened
C
has been opened
D
was opened
Our country _______ a lot in the last fifty years.
#38761
A
will change
B
changed
C
changes
D
has changed
John, ______, you should eat less meat but more vegetables.
#38669
A
keep healthy
B
keeps healthy
C
keeping healthy
D
to keep healthy
--- Bob doing homework?---No, he isn’t. He is a letter.
#41826
A
Does, writes
B
Is, writes
C
Does, writing
D
Is, writing
My best friend visited my house while I __ __ dinner in the kitchen.
#41582
A
cook
B
cooking
C
cooked
D
was cooking