2.Tom appreciated the good chance to study in Oxford since he graduated from No. 4 High School in Shenyang.
A. having been given B. having given
C. having been giving D. to have given
3.Living alone in the central desert in Australia has its problems, obtaining water is not the least.
A. of which B. for what C. as D. whose
4. So involved with computer games that teachers at summer computer camps often have to force them to break for sports and music.
A. became the children B. become the children
C. had the children become D. do the children become
