2019年mpacc考试英语真题——连词599

{01}We had to wait half an hour _______ we already booked a table.

A.since

B.although

C.until

D.before

解析：although 引导让步状语从句,意为“虽然”,表示“虽然我们订了座位,但是我们不得不等半小时”。since意为“自从”；until意为“直到”；before意为“在……之前”。
本题选B。
{02}A dozen ideas were considered____the chief architect decided on the design of the building．     

A.because

B.before

C.whether

D.unless

解析：before意为“在……之前”，引导时间状语从句，表示在决定这个建筑物的设计之前考虑了十几个意见。because意为“因为”，引导原因状语从句。whether意为“是否”，常用于引导名词性从句或让步状语从句。unless意为“如果不，除非”，引导条件状语从句。
本题选B。
{03}The lift in that tall building went wrong and got trapped _____ floors. People in it had no way to get out.

A.in	B.between
C.among	D.on

解析：between floors 指在两层楼之间。类例地，以下各例也选between：
本题选B。