Do you know_______ the books on the shelves— Sorry, I can’t count them, because there are _______books.

A small car is big enough for a family of three ______you need more space for baggage.A．once B．in case C．if D．unless D【解析】试题分析：考查连词：

Why did you vote for Maggie—-Because she is very ________. She always sharesthings with others.

If you really have to leave during the meeting,you’d better leave ____ the back door[ ]

_______ the city centre,we saw a stone statue of about 10 metres in height.[ ]