A.to sit/tying
B.sitting/tying
C.seating/tied
D.seated/tied
A、had worked
B、has worked
C、was working
D、has been working
A.There; that
B.It; that
C.There; whether
D.It; whether
——Where are you going for your holiday?
—I haven’t decided yet. I___go to English.
A、can
B、may
C、must
D、ought to
A.have been working; have
B.have worked; had
C.am working; will have
D.had been working; had had