句子填空（共5分）
小题1:It’s very convenient to ____ _____ _____ _____ their families and friends by using mobile phones.
小题2:Some of them even waste precious time in class _______ _________ ___________.
小题3:With the global warming getting worse, more people choose to live a low carbon life ______ ______ __________ _____ reducing greenhouse gases.
小题4:Only by_______ _______ ________, will we have fewer disasters and a safer earth. Let’s work together and fight for a better future.
小题5:Wash your clothes by hand______ _______ ______ __________ instead of using washing machines.
小题1:get in touch with
小题2:typing short messages.
小题3:for the purpose of
小题4:taking immediate action
小题5:as much as possible
小题1:固定词组：取得联系；
小题2:Waste some time doing sth浪费时间做某事；这里是指浪费时间发短信。
小题3:固定词组：带着…的目的。
小题4:采取行动。
小题5:固定词组：尽可能的。