When you are planting trees, the trees ________ straight in the hole.
#36844
A
must put
B
must be put
C
are putting
D
is put
推荐题目
 —What’s your mother__________ now? —She’s __________ our house.
#37985
A
doing, clean
B
do; clean
C
does; cleans
D
doing; cleaning
---- Who ______ the room?  ----My brother______. 
#40083
A
clean , is
B
clean does
C
cleans, is
D
cleans, does
-- ______did your uncle leave his hometown ?--He ______ for nearly twenty years.
#39845
A
When, has left
B
When, has been away
C
How long, has left
D
How long, has been away
There ________ a sports meeting next week.
#42439
A
has
B
is going to be
C
is going to have
D
will have