________hehasmanyfriends,heisoftenfeelinglonely.
C
状语从句的从属连词的选取。
Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.
Which of the following country is not a member of OECD?
In 1985,_______ became the first international hotel company to open a hotel in China bearing its own name.