Must I finish watering the flowers now–No, you________.

— I’m going to the States. — How long _____ you _____ in the States? [ ]

Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power

The reason for _______ he failed in theexam was that he was too careless

So many people violate traffic regulations that we ____ put too much emphasis on the importance of traffic safety.