题目内容
It was three years_______ he came back.
| A．that | B．since | C．before | D．when |
C
解析试题分析：考查连词的用法区别。若选 “since”,则主句应为现在完成时；若选“that”则 “three years”要带有介词变为时间状语才能用于强调句对其进行强调；D项如果It was 之后为时间点，且it为时间，则可以选；it was+时间段+before 从句，且前后时态要保持一致，表示过多久才、、、；故C正确。
考点：考查连词的用法区别。
But when I got ____ the town ought to have been, all I found was a gas
station.
| A．what | B．which | C．where | D．that |
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| A．Which | B．What | C．It | D．That |
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| A．unless | B． in case | C．so that | D．when |
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| A．Every time | B．The first time |
| C．for the first time | D．Next time |
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| A．what | B．where | C．when | D．which |
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| A．if | B．unless | C．otherwise | D．except |
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| A．As well as | B．As long as | C．As though | D．As soon as |
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| A．four fifth; is | B．four fifths; are |
| C．four fifth; are | D．four fifths; is |