I ______ 900 English words by the time I was ten.

A. learned learnt
B. was learning
C. had learned
D. learnt

She said she __________ the principle already.

A. has seen
B. saw
C. will see
D. had seen

He ___ in the factory for three years before he joined the Army.

A. has worked
B. works
C. had worked
D. will work

His uncle has already posted the photos to him. （改为否定句）His uncle ______ not posted the photos to him ______.

I began to teach in New Oriental School in 2008. It is 2018 now. So far I ______(teach) here for 10 years. By 2017, I ______(teach) for 9 years.

He has already gone home.He ___1____ ____2______ home ____3________. (否定句)______4______ he _____5_____ home ___6___? (一般疑问句)

3. He has been there twice.he been there? (就划线提问)

Both of them __________ _________ (be) in Hongkong for ten days.

_____________ you ____________ (find) your watch yet?

---Are you thirsty?---No I _________ just _____________ (have) some orange.