________ he has many friends, he is often feeling lonely.
A、AsC
状语从句的从属连词的选取。
________ he has many friends, he is often feeling lonely.
______ are the primary destinations for the Chinese at present.
Thepolicemancameuptothelonelyhousewiththedoor_______,_______thereforawhileandthenenteredit.
______aretheprimarydestinationsfortheChineseatpresent.
In Europe _______ are the two leading contenders for a global reservations system.
