一、結(jié)合上一單元的語(yǔ)法學(xué)習(xí)，用 since/for/yet/already/ever/never 完成下列句子。
1. Elsa and Sam haven't seen each other
for
two years.
2. My father has
already
come back from Shanghai. He is at home now.
3. Jessica has lived in Beijing
since
she came to China in 2020.
4. It's my first time to go to England. I have
never
been there before.
5. Judy can't go to the movies with us because she hasn't finished her homework
yet
.
6. —Have you
ever
visited the Great Wall before?
—Yes, I have. It's amazing.
7. The Smiths have lived in Shanghai
since
five years ago.
8. I haven't been to the USA
yet
. I will visit this winter.
9. Mr Brown has taught in this school
for
15 years.
10. Tom has worn glasses
since
he was 7 years old.
