A. writes
B. writing
C. is writing
D. wrote
A. has
B. have
C. had
D. was
A. go
B. goes
C. went
D. going
A. is
B. was
C. were
D. be
A. do
B. does
C. did
D. has
A. go
B. goes
C. gone
D. going
A. is
B. are
C. was
D. were
A. is
B. are
C. was
D. were
A. has
B. have
C. had
D. was
A. come
B. comes
C. came
D. coming