暑假来了，为了帮助大家更好地学习，小编整理了这篇八年级英语暑假作业下册试题精选，希望对大家有所帮助!

1. Sales of CDs have greatly increased since the early 1990s, when people ________ to enjoy the advantages of this new technology.

A. begin B. began

C. have begun D. had begun

2. Turn on the television or open a magazine and you ________ advertisements showing happy families.

A. will often see B. often see

C. are often seeing D. have often seen

3. I hear Jane has gone to the Holy Island for her holiday.

Oh, how nice! Do you know when she ________?

A. was leaving B. had left

C. has left D. left

4. What were you doing when Tony phoned you?

I had just finished my work and________ to take a shower.

A. had started B. started

C. have started D. was starting

5. I ________ you not to move my dictionarynow I can’t find it.

A. asked B. ask

C. was asking D. had asked

1. B. when引导的是一个非限制性定语从句，when指20世纪90年代初，当然用一般过去时。

2. A. 这是“祈使句+and +陈述句”句型，祈使句相当于一个条件状语从句，and后的陈述句的谓语用一般将来时，这是一个较为固定的句型。

3. D. 因为Jane已经度假去了，“离开”此地就当然是在此之前的过去某个时间了，所以用一般过去时，选D。另外，when通常都不与完成时连用，排除B和C，A也与语境不符。

4. D. 过去进行时在此表示过去准备要做的事。句意为：(Tony给我打电话时)我刚好做完工作，准备去冲凉。

5. A. 由now可知前句的意思是：我曾经叫你不要搬动我的词典的 (你偏不听)。“叫”是在过去发生的动作，用一般过去时。