124. Why don't we walk around the Three Rs?
125. It's fun to learn about recycling.
126. Reusable bags are more expensive than plastic bags.
127. You shoudn't throw old clothes away.
128. Don't forget to turn the tap off when you are brushing your teeth.
129. If you don't work hard, you won't pass your exam.
130. If Henry fails his examination, his parents will be sad.
131. If Sue doesn't go out this weekend, she will have time to study.
132. If it snows tomorrow, I will go skiing.
133. If he doesn't leave soon, he will miss the bus.
134, If you play with matches, you will hurt yourself.
135. It's very exciting to live on Mars.
136. This is the third times I have been to this restaurant.
137. You won't have to use computers because your TV will do everything.
138. Peter may not come to the party tonight.
139. I didn't have your number, so I couldn't phone you.
140. He has learned English for three years.
141. Da Nang is one of the best cities in Viet Nam.
Bn học tốt!! Có gì không hiểu thì hỏi mình ạ ^^.
