—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
Will you be able to attend the lecture __________ next week? A givingB. given C. to be givenD. being given
The government must take measures to prevent the river __________.
It was __________ that we wanted to stay here for another two days.
-I heard Charlotte had been drowned in the lake. -Really ! Her boat turned __________,and __________ she couldn't swim.
__________,education is about learning and the more you learn, the more equipped for life you are.