It’s good manners _______ .
| A．for Chinese people to open the present as soon as he/she receives it. |
| B．for both Chinese and British people to open the presents the moment they receive them. |
| C．for both American and British people to open the presents when they get back home. |
| D．for both American and British people to open the presents immediately they receive them. |
It worried Mary a lot__________she would pass the college entrance examinations.
| A．whether | B．if | C．that | D．how |
__________ caused the accident is still a complete mystery.
| A．What | B．That | C．How | D．Where |
__________that they found an unusual plant in the forest.
| A．It is said | B．They are said |
| C．It said | D．It says |
__________we can’t get seems better than__________we have.
| A．What；what | B．What；that |
| C．That；that | D．That；what |
—Do you still remember__________he was taken to the hospital?
—Yes，he was sent to the hospital in Mr Smith’s car.
| A．why | B．how | C．when | D．that |