Mr. Wang often says to her child, “You _______ play with fire(火). It’s dangerous.A. mustn’t B. had better C. needn’t
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. – ______.