A.had been canceled
B.have been canceled
C.having been canceled
D.being canceled
[解析] C 句意:由于大雾所有的航班都被取消了,许多乘客别无他法只好乘火车。All flights having been canceled…是独立主格结构,在此作原因状语。 第7讲 │ 跟踪训练
跟踪训练 Ⅰ.单词拼写 1.The river has been p_______
by waste products from the factory.
2.Drugs were not r__________ as a problem then.
3.The tiger e_______ from the zoo and killed some goats on a farm.
4.The shop sells goods without any
_______ (打折).
5.He is very ill and unlikely to _______ (恢复).
olluted ecognised
scaped discount recover Ⅱ.选词填空 用下面短语的适当形式填空。 dive into; get into trouble; set sail; on the edge of; in search of 1.Mr Smith had committed a murder, for which he
______________.
2.The seamen decided
_________the next morning for Europe.
3.How dangerous! The boy was
_____________the platform, and he might fall off it.
第7讲 │ 跟踪训练
got into trouble to set sail on the edge of 4.Without hesitation, he
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