48. Unless we buy tickets for the British museum, we will go to Kensington Gardens.

49. The Nile is the longest river in the world.

50. Toronto is colder than Sydney.

(38) village

(39) house

(40) pharmacy

(41) motorbikes

(42) walk

(43) skating

1. You shouldn't ride an electrical motor before 16.

2. She is one of my best friends of mine.

3. Although she isn't brilliant, she studies very well.

4. This beautiful house is hers.

5. Although the film was exciting, Jim fell asleep in the cinema.

6. You shouldn't drink so much alcohol.

1. Next week, Lan (not visit) won't visit the petronas Twin Towers.

2. I think (use) use source of energy effectively.

3. I should (play) play sports to keep fit.

4. Listen! My classmate (sing) is singing an English song.

5. What is she (do) doing to reduce traffic jams now?

1. Why do you want to see them?

2. And they're cute too.

3. How much is a pair of slippers?

4. I'd like some milk and chicken.

5. What time do you have dinner?

What animal did he see in the zoo last Sunday?

Have you finished your homework.......?

A. since

B. for

C. yet

D. already

1. You should do morning exercises every morning.

2. If people throw rubbish into the right bin, they will keep the environment clean.

3. I haven’t written to my friend since last June.

4. Because Vung Tau has clean and beautiful beaches, it attracts lots of tourists.