Question

Now one of the most serious problems many people are worried about _____ on the lack of adequate housing space.

A．insists

B．depends

C．agrees

D．focuses

Answer 1

D

考查动词：这些动词都可以和on搭配，A. insists坚持，B. depends 依赖 C. agrees同意 D. focuses专注，句意：现在很多人担心的最严重的问题重点在房屋空间缺少上。选D。