The girl hid herself under the table ______ she could see everything taking place in the room.
A．after which B．from where C．from which D．in where
How long do you think it will be ________ the computer company puts forward a new product?
A．before B．since C．until D．that
Several of the passengers were hurt and one was taken to hospital. Luckily ____ was killed.
A．no one B．not all C．none D．no other
I can’t say which type of tea tastes better. It’s just a（an） ______ of personal preference.
A．affair B．problem C．variety D．matter
______ that he has no qualifications in business management, Ken plans to gain the necessary skills by taking a part-time course.
A．Concerning B．Concerned C．Being concerned D．To concern
His health failing, ______ last year.
A．so the school gave Mr. Smith leave B．the school had given Mr. Smith leave
C．so Mr. Smith went on leave from work D．Mr. Smith went on leave from work
