Betty ___________ hard since last term. That’s why her exam results are so good!

A. has worked B. will work C. worked D. was working

A 【解析】句意：自上学期以来贝蒂一直努力学习。那就是她考试成绩如此好的原因！考查动词时态。since last term自从上学期以来，表示的是一段时间；work工作，动词，是持续性的。根据句意，结合句子结构，可知本句是现在完成时态，Betty是三单人称，需用has构成完成时，故选A。

In the past few years there ________ great changes in my hometown.

A. had been B. have been

C. were D. are

B 【解析】句意：在过去的几年中，在我的家乡有很大的变化。根据时间状语in the past few years可知此处用现在完成时，故为have been，故选B。

（2017年四川成都）--Did you hear someone knock at the door just now?

-- Sorry. I ______ to my friend on the phone.

A. was talking B. talked C. am talking

A 【解析】句意：----你刚才听到有人敲门了吗？----对不起。我正通过电话和我的朋友聊天呢。A. was talking过去进行时；B. talked 一般过去时；C. am talking现在进行时。根据语境是“有人敲门”的那个时候，我正通过电话和我的朋友聊天；可知用过去进行时，选A。

The earth is a planet and it around the sun.

A. goes . B. go . C. will go . D. went

A 【解析】句意：地球是一颗行星，它围绕太阳转。考查时态辨析。英语中，凡是客观事实、客观真理或谚语，应用一般现在时。因it是第三人称单数主语，故谓语动词应用第三人称单数形式。故选A。

（2017年安徽）I am surprised at the new look of my hometown, for it _____ a lot over the years.

A. changed B. changes C. will change D. has changed

D 【解析】试题句意：对我的家乡的新面貌我感到吃惊，因为这几年它变化很大。A. changed 改变，过去式； B. changes第三人称单数形式； C. will change 一般将来时；D. has changed现在完成时。over the years.指最近几年即从过去到现在的几年，所以用现在完成时，故选D。

When you________ me last night, I ________the piano.

A. were calling；was playing

B. were calling；played

C. called；played

D. called；was playing

C 【解析】 句意：昨晚你给我打电话时，我在弹钢琴。考查动词时态辨析题。when引导时间状语从句，表示主句和从句的动作同时发生。last night昨晚，用于一般过去时，排除AB选项；根据句意结构，可知选C。

（2016 • 湖北省随州市中考）—Did you watch the football match on TV last night?

—I wanted to, but my father ____________ his favorite TV program.

A. watched B. watches C. was watching D. had watched

A 【解析】句意：---昨晚你看电视上的足球比赛了吗？---我想看呢，但是我爸爸那会正在看他最喜欢的电视节目。此处考查过去进行时。故选C。

—Hello, John. This is Mike. What are you doing now?

—I'm watching a football match. It started at 7：30pm and________on for another one hour.

A. has been B. was

C. will be

C 【解析】 句意：---你好，约翰。我是迈克。你现在在做什么？----我正在看足球比赛。下午7点30分开始，将再比赛一个小时。A. has been现在完成时；B. was 一般过去时；C. will be一般将来时。another + 基数词 + 名词复数 = 基数词 + more + 名词复数，其意思是“另外/再多少个...”。for+时间段，表示做某事做了多长时间，根据语境足球...

（2017年山东泰安）With the development of science and technology, robot cooks ______ in our families in the future.

A. appear B. appeared C. will appear D. is appearing

C 【解析】试题句意：随着科学和技术的发展，机器人煮饭机在未来将出现在我们的家庭中。A. appear出现，动词原形；B. appeared 动词过去式； C. will appear 将来时态； D. is appearing现在进行时。根据时间，可知用将来时，故选C。

A little effort every day，you________ a big difference.

A. makes B. made

C. have made D. will make

D 【解析】 句意：每天努力一点，你将会有大的不同。根据句式结构：祈使句+一般将来时的主句，A little effort every day名词短语作为祈使句，故此处用一般将来时will make，故选D。