A、 standing
B、 stand
C、 to stand
D、 stood
答案:A
A、 standing
B、 stand
C、 to stand
D、 stood
答案:A
A. what they do
B. what they did
C. what do they do
D. what did they do
A. standing
B. stand
C. to stand
D. stood
A. for
B. as
C. that
D. what
A. a / an
B. an / a
C. the / a
D. an / the
A. Is
B. Are
C. Have
D. Has
A. purposes, organizing
B. purpose, organize
C. purposes, organization
D. purpose, organizing
A. where
B. when
C. why
D. that
A. both
B. either
C. none
D. all