— Why does she always ask you for help?
— There is no one else _______, is there?
A．who to turn to B．for her to turn
C．for whom to turn D．she can turn to
In order to be _______ for Christmas, all these gifts must be mailed immediately.
A．in time B．at one time C．at a time D．in no time
Two people were killed in the serious car _______ the other day.
A．strike B．break C．crash D．incident
It is said that the temperature is unusual mainly _______ global warming caused by human activities.
A．in spite of B．by means of C．in case of D．on account of
The transformation of our city will make _______ for people here to have a comfortable environment.
A．it possible B．no possibility C．impossible D．there was possibility
Mary _______ her mother with the housework, but she didn’t.
A．must have helped B．ought to have helped
C．must help D．should help
