Since ∑ d over vertices of even degree and 2e are both even numbers什么意思

Since ∑ d over vertices of even degree and 2e are both even numbers什么意思 A:We've lived here ------------ 1980.B：so you’ve lived here------about over 20 years.Asince,for B for,since Cfor,for D since since You should go over your test paper____you hand it in.A before Bafter Cwhile D since The rest of the novel ___ vert interesting A were B are C is D seem .They went to London ______ just over five months.A.for B.since C.before D.when 单选：My family has lived here () over ten years. A.in B.after C.for D.since He met many problems__he was going over his lessons?A.before B.as soon as C.since D.while He met many problems ____he was going over his lesson A.before B.as soon as C.since D.while let'a talk all this over again-----it belonged to hima after b while c since d before It is not immediately clear ______ the financial crisis will soon be over.A.since B.what C.when D.whether 为什么D不行? The next moment,____ she had time to realize what was happening,she was hit over the head.a、before b、when c、since d、as Zhang Ming has learnt more than two thousand English words the last few yearsA.after B.since C.over D.in It ____ over 10 years since my grandpa _______.3QA.is,died B.is,has been dead C.has been,was dead D.was,has died [D25] It is not immediately clear ______ the financial crisis will soon be over.A.since B.what C.when D.whether 请翻译,并分析. // Dear * Since the choice of the road is d// Dear * Since the choice of the road is die on the road *（*）* Covered all over with cuts and bruises //The respective求翻译 during over since for的用法和时态 Since so I can start all over again Over a month ______(pass)since we come here.