________ he has many friends, he is often feeling lonely.
C
状语从句的从属连词的选取。
Thegovernmentcalledoutpolicementosuppresstheriot.
Which of the folloing is NOT included in the fabled Five Mountains in China?
In Europe _______ are the two leading contenders for a global reservations system.
Astothevariouspollutions,whichofthefollowingisNOTtrue?