________hehasmanyfriends,heisoftenfeelinglonely.
A、AsC
状语从句的从属连词的选取。
In1995,anaverageof_______ofdomestictravelerswentonsightseeinginChina.
Hefound_______difficulttostudymaths.
PoorspeakerofEnglishthoughhewasatthetime,hestillmanagedtomakehimself________.
______alittleearlier,Iwouldhavecaughtthetrain.
Whichofthefollowingisnotaninternationalvisitor?
