The danger of 
HINI was real, especially in the beginning, little was known about the new disease.
| A．if | B．because | C．when | D．before |
相关试题
She brought with her three friends, none of I had ever met before.
| A．them | B．who |
C．whom | D．which |
The how-to book can be of help to wants to do the job.
| A．whoever | B．no matter who | C．whomever | D．who |
News came from the school office Wang Lin had won the first prize in the national competition.
| A．which | B．what | C．that | D．where |
Michael’s new house is like a huge palace, with his old one.
| A．comparing | B．compared | C．to compare | D．compares |
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