解析　under no circumstances位于句首，句子要用部分倒装，再根据句子的时态可知用would。故A项正确。

6．As_________ ，a couple of pandas reached Taiwan Island smoothly.

A．expected B．expects

C．to expect D．expecting

答案　A

解析　考查状语从句的省略。补全为"As it was expected，a couple of pandas reached Taiwan Island smoothly."。

7．Tomorrow is Tom's birthday. Have you got any idea _______ the party is to be held?

A．what B．which

C．that D．where

答案　D

解析　句意为：明天是汤姆的生日。你认为晚会应该在哪里举行？where引导一个同位语从句，并在同位语从句里作地点状语。

8．In the dark forests____________，some large enough to hold several English towns.

A．stand many lakes B．lie many lakes

C．many lakes lie D．many lakes stand

答案　B

解析　lakes不可能stand，排除A、D两项；再由表地点的介词短语位于句首引起句子倒装，排除C项。

9．It was not until she got home Jennifer_________ realized she had lost her keys.

A．when B．that

C．where D．before

答案　B

解析　句意为：直到到了家，Jennifer才发现钥匙丢了。not...until...句型的强调结构为：It is/was not until...that...。

10．Life is like a long race __________ we compete with others to go beyond ourselves.

A．why B．what

C．that D．where

答案　D

解析　句意为：生活就像一次长跑，我们不断和别人竞争以超越自己。本句中，where引