Inthatschool,Englishiscompulsoryforallstudents,butFrenchandRussianare_________.
A、specialMr.Smithgradually_____aknowledgeofthesubject.
Motorists_____ofspeedingmaybebannedfromdrivingforayear.
Itwasneverclear_______themanhadn’treportedtheaccidentsooner
__________theconvenienceofdigitalpayment,manyseniorcitizensstartedtousesmartphones.
Thisisthe_____pianoonwhichthecomposercreatedsomeofhisgreatestworks.
