He doesn’t know ________ they will plant trees on Saturday or not.
#39074
A
weather
B
whether
C
if
D
that
推荐题目
 —Do you know _______ the Capital Museum?   —Next Friday.
#36467
A
when will they visit
B
when they will visit
C
when did they visit
D
when they visited
My mother asked me______ enter my room.
#79264
A
whether she could
B
when could she
C
that she can
D
how can she
--I don’t know _________ now.  --Her mother says she is much better.
#39234
A
what is she
B
where is she
C
who is she
D
how she is
The timetable(时刻表) tells us __________________________every day. 
#38240
A
when does the train arrive
B
when the train will arrive
C
when will the train arrive
D
when the train arrives