---Listen! Who ______ in the next room? ---I think Sam is.
#41778
A
sing
B
sings
C
singing
D
is singing
推荐题目
Every year lots of trees ________ to make our country more beautiful.
#39871
A
is planted
B
was planted
C
are planted
D
were planted
－Where’s your father?－He ______ Beijing. He won’t be back ______ next week.
#42185
A
has gone to; until
B
has been to; until
C
has been to; after
D
has gone to; after
The shop ________ at 8:00 a.m. and it ________ for ten hours every day.
#42729
A
opens; is open
B
is opened; opens
C
is open; has opened
D
opened; opens
－When should I hand in my paper? －It after class.
#39356
A
must be handed in
B
is handed in
C
was handed in
D
will hand in