-- Your uncle speaks good English. Who taught him?-- ________, he learned it by himself.
We will spend our winter holiday in Shanghai, but we haven’t decided _______.
David visited lots of ________ in the world.
--________ has your grandpa lived here? – Since last year.
I ________ a book two days ago. I ________ it for two days.
– Let’s go shopping after dinner. – ______.