题目内容
Livemocha.com is a free site ______visitors can not just learn various languages but also chat online.
| A．where | B．which | C．that | D．what |
A
解析试题分析：此处a free site是先行词，其在定语从句中作地点状语，故选A。句意：网站Livemocha.com是一个免费的网站，在这个网站访问者不仅能学习各种语言而且可以网上聊天。
考点：考查定语从句的关系词。
David knocked at the door for nearly half an hour______Mary opened it, unwilling.
| A．when | B．while | C．until | D．before |
—How long has John been here?
— Two years, _______ he still has no friends.
| A．and | B．so | C．but | D．or |
They are talking _____ they had been friends for years, while in fact they have known each other for only two hours.
| A．even though | B．as though | C．now that | D．until |
Some people are holding their umbrellas ____ it is raining.
| A．in case | B．so that | C．as though | D．unless |
Start out right away, _____ you’ll miss the first train.
| A．and | B．but | C．or | D．while |
_____ others might have been satisfied, Johnson has higher ambitions.
| A．What | B．Which | C．As | D．where |
We’d better stay here a little longer he turns up unexpectedly.
| A．although | B．in case | C．since | D．if only |
______ you’ve got a chance, you might as well make full use of it.
| A．Now that | B．After | C．Though | D．As if |