--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
The food on the plate          bad. Throw it away.
#37528
A
is smelt terrible
B
is smelt terribly
C
smells terribly
D
smells terrible
It is said there ________ two basketball matches on TV this Saturday.
#41698
A
are going to have
B
is going to be
C
were going to be
D
are going to be
Mary _____ by the lake when a black cat ran past her.
#40107
A
sat
B
has sat
C
was sitting
D
sits