He was often seen _________ with charity work last year.
#44620
A
to help
B
helped
C
helping
D
help
推荐题目
Our classroom   _______   by us every day!
#44538
A
is cleaning
B
has cleaned
C
must clean
D
is cleaned
Neither Jam nor his parents _______ places of interest here since they came to China.
#44627
A
will visit
B
has visited
C
have visited
D
visited
An official _____ by some reporters on food problems in Shanghai yesterday.
#44962
A
is interviewing
B
is interviewed
C
was interviewing
D
was interviewed