(2013·高考山东卷)Mark needs to learn Chinese ________ his company is opening a branch in Beijing.
A．unless B．until
C．although D．since
(2013·高考重庆卷)________we have enough evidence，we can’t win the case.
A．Once B．As long as
C．Unless D．Since
(2013·高考天津卷)________ small，the company has about 1,000 buyers in over 30 countries.
A．As B．If
C．Although D．Once
(2013·高考北京卷)I took my driving license with me on holiday，________I wanted to hire a car.
A．in case B．even if
C．ever since D．if only
(2013·高考重庆卷)It’s not easy to change habits，________with awareness and selfcontrol，it is possible.
A．for B．or
C．but D．so
(2013·高考北京卷)Don’t turn off the computer before closing all programs，________you could have problems.
A．or B．and
C．but D．so
