It has been announced that candidates _______ remain in their seats until all the papers have been collected.
| A．can | B．may | C．will | D．shall |
What have we said _______ her so happy?
| A．makes | B．to make |
| C．made | D．has made |
“Good morning. Can I help you?” “I’d like to have this package _______.”
| A．be weighed | B．to be weighed |
| C．to weigh | D．weighed |
Tony was very unhappy for _______ to the party.
| A．having not been invited | B．not having invited |
| C．having not invited | D．not having been invited |
Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
| A．to see | B．to be seen |
| C．seeing | D．seen |
With a lot of difficult problems ________, the newly-elected president is having a hard time.
| A．settled | B．setting |
| C．to settle | D．being settled |