______ has recently been done to improve the conditions of elementary schools, a great number of children are unable to go to school.
. I am looking forward to ______ your answer as soon as possible.
. — Could I use your dictionary for a few moments, please? — ______. I’m not using it myself.
. She ______have stopped her work halfway.
. She ______to them about her age in order to get the job.
. —Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.