Country life is better than city life ________ it offers fresh air and noiseless environment
A
A在于，原因是，在…方面C.关于，至于应用举例：Ilikethecountrybetterinthatitisclosertonature.我更喜欢乡村，因为它更接近自然。
Childrenhaveanatural________abouttheworldaroundthem.
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.
Theoldcouplehavebeenmarriedfor40yearsandneveronce_______witheachother.
Idon’tmind_______thedecisionaslongasitisnottoolate.
Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.