The scientist corresponds with colleagues in order to learn about matters ________ to her own research.
A．relevant B．instant C．resistant D．important
Chinese folk music gave ________ life to Mr Liu and made him lead ________ new life in his later years.
A．the; a B．the; the C．a; the D．/; a
A broad smile spread_____ Jack’s face when he eventually gained a scholarship.
A．across B．through C．at D．in
China’s Beidou global satellite navigation system will have been completed by 2020, ____ of more than 30 satellites.
A．consisting B．consisted C．to consist D．consists
Such a fierce dog _____ that we had to wait outside before we could get into his yard.
A．has he had B．did he have C．he has D．he has had
An independent traveler would like to struggle with maps and signs ____ he finds the way．
A．since B．until C．before D．when
