Tom said he had been working for three hours, _____ ,evidently, was untrue.A．he

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Tom said he had been working for three hours, _____ ,evidently, was untrue.

A．he

B．this

C．it

D．which

答案

解析

which是引导定语从句, which指代前面句子的整个内容。evidently为插入语。若空格前加上并列连词but, 其后应是个独立的分句, 则要选C项it。

举一反三

Doing your homework is a sure way to improve yor test scores, and this is especially true ____ it comes to classroom tests.

A．before

B．since

C．when

D．after

题型：不详难度：| 查看答案

Knowing how long the test would last, the students who finished ____ back and waited until the end of the exam.

A．settle

B．settled

C．settling

D．to settle

题型：不详难度：| 查看答案

Coffee, which is becoming more and more popular, was first grown in _______ is now part of Brazil.

A．what

B．that

C．all

D．which

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---- I am not able to solve some practical problems using Newton’s First Law of Motion.
----That’s just _______ most of the students are puzzled easily.

A．what

B．why

C．how

D．where

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_____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.

A．Having been explained	B．The problem having been explained
C．The problem had been explained	D．Although the problem had been explained

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