The old couple walked rather slowly, and could be seen, from time to time, to stop and rest, ________ out to sea.
A．to be staringB．stared
C．having staredD．staring
It was unbelievable that the fans waited outside the gym for three hours just ________ a look at the sports stars.
A.hadB．having
C．to haveD．have
The boy, ________ with his school work every day, felt rather tired and wanted to have a whole day to relax.
A．occupying B．having occupied
C．occupied D．being occupied
We've had a good start, but next, more work needs ________ to achieve the final success in English study.
A.being done B．do
C．to be done D．to do
You can spend your free time in our library.There is a reading room ________ more than 600 students.
A.seats B．to be seated
C.seated D．seating
The students in our school expected ________ more time for reviews and exercises before the College Entrance Examination next year.
A．there being B．there has
C．there had D．there to be
