If I ______ in your place ， I wouldn ‘t trouble him.
A、wereA
本句是对现在的虚拟，所以条件状语从句用过去时。同时在虚拟语气中，一般不用was而一律用were，所以答案是A。
Ifyouhavedifficultylocatingaparticularbook，pleaseaskourlibrariansfor___(assist).
Roundthecornerwasabuilding_____windowswereallbroken.
Weallknowaboutthe_____thatsmokingcandotoourhealth.
对中国学生而言，用英语思维比说英语更难。
Ithoughtherrequestforfinancialaidwas___(reason),butsomehowitwasrefused.
