【原创】The job would be impossible without the _____ of the computer which helps us much in many ways.
—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
—Your mother becomes more and more forgetful. —Yes. She searched for her cell phone for a whole day last Sunday but it ______ in her coat pocket the next day.
_______ of food is in need nowadays in Africa.
I’m really tired _______ Tom. He had me _________ for two hours in the rain.
If you cheat in the exam, you could hardly _________ it.