It________about ten years since we met last time.
[ ]
They kept on________some strange questions.
We found________difficult to study maths well.
When spring comes,it gets________.
A．warm and warm
B．warmer and warmer
C．warmer and warmest
D．more and more warm.
Which country has________population,the U.S.A.,Japan or China?
They remembered that they________to the place.
A．have been
B．had arrived
C．have come
D．had been
Neither of them________the stranger（陌生人）.
You’d better ask the P·E·teacher, ________ you?
You are sure ________ the game.
Mr Hu kept ________ us to remember TEAMWORK.