【单选题】原子灰与固化剂一般是以( )的比例混合的。
【判断题】Jack's father is still in that company.
【单选题】Jack's father is ______ doctor. [ ]
【单选题】Jack's father suggested that Jack ______ in London for a few more days.
【单选题】Jack's father China twice,
【简答题】A.Jack's father married at a younger age than Jack. B.Jack's parents are better off. C.Jack and Anne spent a lot of time on house-hunting. D.The building site is not to be far from where Jack works.