I was working as a waiter last month，__________ my friends were lying on the beach.
| A．whenever | B．though |
| C．for | D．while |
They earn a great deal, but they can’t balance their _______ because the wife is often ill.
| A．plan | B．budget | C．project | D．prediction |
Nobody but doctors or nurses and those _______ by Dr. Hu _______ to enter the patient’s room.
| A．invited; is allowed | B．inviting; are allowed |
| C．are invited; is allowed | D．invited; are allowed |
Many of the creatures in Rowling’s world are not real, and much of ________ happens is strange.
| A．which | B．that | C．it | D．what |
______ back, they talked about the persons and things ______ they could remember at school.
| A．In the way; when | B．All the way; which | C．In the way; what | D．All the way; / |
a written permission, he had to write another letter to the president of the university.
| A．Not giving | B．Not having been given |
| C．Having not given | D．Having not been given |