Vocabulary
Reading
Relative Clauses
PS or PC
Present Perfect Continuous
100

a device that is placed inside a machine (such as a clock, toy, or car) to supply it with electricity

battery

100

"Science and Technology. How much do you know?"

What do modern gadgets use?

Batteries or electricity

100

That's the woman __________ teaches our science class.

  • Answer: who / that

100

I __________ (walk) to school when I saw my friend.

Answer: was walking

100

He is out of breath because he __________. (run)

  • Answer: has been running

200

a large, round object in space (such as the Earth) that travels around a star (such as the sun)

planet

200
Life Beyond Earth


According to the story. Why might life be on other planets?

- The universe is huge

- Powerful telescopes showed us

- There are so many planets that we haven't discovered yet.

200

This is the book __________ I read last summer.

  • Answer: which / that

200

While we __________ (have) a picnic, it started to rain.

Answer: were having

200

How long __________ English? (you / study)

  • Answer: have you been studying

300

a scientific test in which you perform a series of actions and carefully observe their effects in order to learn about something

experiment

300

Secret Destinations

What is Greece famous for?

Ancient monuments and Sandy beaches

300

The restaurant __________ we had dinner was very expensive.

  • Answer: where

300

When the teacher __________ (enter) the room, the students were talking.

Answer: entered

300

She __________ a book for two months.

  • Answer: has been writing

400

someone who is between 13 and 19 years old

teenager

400
THE GRAND CANYON


How many people visit the Grand Canyon every year?

About 5,000,000 million

400

I have a neighbor. He has three dogs.

Turn this into a relative clause 

  • Possible Answer: I have a neighbor who has three dogs.

400

I __________ (eat) lunch when I __________ (remember) the test.

  • Answer: was eating, remembered

400

The children __________ in the garden. Their clothes are all dirty.

  • Answer: have been playing