Whatever is left over may be put into the refrigerator,________ it will keep for two or three weeks.(2011·安徽)
– Have you ever been to the city before? – No. This is the first time I _____ here.
_____ is necessary for us to tell him about the result.
Mrs Chen is very strict — we don’t dare to say a word _____ she asks us to.
– The lecture will begin at 4 o’clock in the afternoon, right? – Yeah, ____ you get there on time.
– Tom has made great progress in spelling. – So he has and _____.