--When did you become a volunteer for the elderly?-- Two years ago. I this group since then.
#42442
A
joined
B
took part in
C
have joined
D
have been in
推荐题目
One of the students __________ good at ________piano.
#37683
A
are, playing the
B
is, play the
C
are, playing
D
is, playing the
I __________ the CDs to you if I have time tomorrow.
#39710
A
will return
B
returned
C
have returned
D
return
—How many times ________ Li Yan ________ to the Great Wall?—Twice.
#38217
A
has; been
B
is; going
C
has; gone
D
does; go
—I think trees ____________ twice a week in such hot weather.—Yes, I agree. Or they may die without water.
#36181
A
must water.
B
are watered.
C
must be planted.
D
must be watered.