Cancer is ________ second only to heart disease as ________ cause of death.
| A．the; a | B．/; a |
| C．a; a | D．the; the |
—Did you sleep well last night?
— No, the loud noise from the street ______ me awake for hours.
| A．had kept | B．is keeping | C．has kept | D．kept |
The App WeChat provides a networking platform ______ communication is faster and easier.
| A．which | B．where | C．when | D．why |
You cannot take back your words ______ they are out of your mouth.
| A．before | B．whether | C．once | D．while |
The paintings ______ from the National Gallery last week have been found.
| A．stealing | B．to steal | C．stolen | D．to be stolen |
This kind of cell phone is very common and I also have ______.
| A．one | B．it | C．that | D．another |