--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
Mr Li ________ . 
#42495
A
teach me English
B
teach my English
C
teaches me English
D
teaches my English
—What ________ your brother ______ last weekend?—He visited his friends.
#42586
A
are /doing
B
is /doing
C
does /do
D
did / do
—— What __________ he do?    —— He __________ an actor.
#41499
A
is, is
B
does, does
C
does, is
D
is, does
Mary isn't here at the moment. She_________ later.
#42111
A
comes
B
came
C
has come
D
is coming