There was something wrong with the network, or the email ________ earlier.
| A．could have been sent | B．might be sent |
| C．need have been sent | D．must be sent |
.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 |
..His grandfather was among the first to settle in ____is now a famous holiday center.
| A．what | B．which | C．where | D．that |
.------It was fine yesterday.
-------________.And very day for fishing,isn’t it?
| A．So it was | B．So it is | C．So was it | D．So is it |
.With that trust ____ to serve all Americans and I will do my best to fulfill that duty every day as your President.
| A．coming a duty | B．which comes a duty | C．comes a duty | D．a duty came |