_____the program, they have to stay there for another two weeks.
| A．Not completing | B．Not having completed |
| C．Not completed | D．Having not completed |
.----What did he want to know,Anne?
-----_______I could finish writing the report.
| A．When was it | B．It was when that | C．It was when | D．When it was that |
. _____is known to us all is that the old scientist, for____ life was hard in the past,still works very hard in his eighties.
| A．As; whom | B．What; whom | C．It; whose | D．As; whose |
.We live day by day ,but in the great things, the time of days and weeks ______so small that a day is unimportant.
| A．is | B．are | C．has been | D．have been |
.Having checked the doors were closed, and _____all the lights were off, the boy opened the door to his bedroom.
| A．why | B．that | C．when | D．where |
.A woman tearfully explained _____she had recently lost her husband in a car accident.
| A．when | B．how | C．why | D．where |