Time Zones 2 - Unit 9 - Video - Biking in cities

Complete the sentence. Anna has a cold - she should ____ at home.

• hurt

• cut

• rest

• exercise

Complete the sentence. Scientists use ______ technology to measure air pollution.

• modern

• century

• early

• recently

Complete the sentence. A group of scientists is __________ a smartphone app that measures air pollution.

• containing

• developing

• breaking

• preventing

Complete the sentence. She ate too much food, so she has a __________ now.

• earache

• headache

• backache

• stomachache

Complete the sentence. Ling has a fever. What should she __?

• do

• does

• need

• had

Complete the sentence. If you're sick, you _____ take some medicine.

• shouldn't

• have

• should

• eat

Complete the sentence. My friend is in the hospital. Why don't we _____ her?

• to visit

• visit

• go

• meeting

Which word means; 'something good'

Which word means; 'something bad'?

What four different types of pollution are there?