--When did you become a volunteer for the elderly?-- Two years ago. I ______ this group since then.
#41941
A
joined
B
took part in
C
have joined
D
have been in
推荐题目
In the last two years the workers______ many tall building.
#36479
A
had built
B
was built
C
will build
D
have built
They have been skating __________.
#40389
A
for three hours
B
since three hours ago
C
three hours ago
D
since three hours
Peter ________ to help our math teacher carry books yesterday.
#40460
A
tells
B
is told
C
told
D
was told
—Tom wants to know if you ___ a picnic next Sunday.—Yes. But if it ___， we'll visit the museum instead.
#39864
A
will have; will rain
B
have; rains
C
have; will rain
D
will have; rains