Not until he left home ______ to know _______ important the family was for him.
| A．did he begin; what | B．had he begin; how |
| C．did he begin; how | D．had he begin; what |
What she went through those years ________ the best in her,such as patience and will power．
| A．brought up | B．brought out | C．brought about | D．brought down |
Close the door of fear behind you，and you _________ the door offaith open before you．
| A．see | B．have seen | C．will see | D．are seeing |
The next day is Thanksgiving Day,a special moment _________ we can express our gratitude, respect and love we feel all year round．
| A．which | B．when | C．where | D．／ |
Most computer users think it necessary for their software ________ regularly．
| A．to up date | B．to be updated |
| C．to have been up dated | D．to have updated |
_________ you are on holiday,you should enjoy leisure time and take your focus off your work．
| A．Now that | B．Even if | C．If only | D．As though |