I don't know during the summer vacation． Do you have any advice？
How about visiting Beijing International Horticultural Expo（北京国际园艺博览会）？（ ）
A．what should I doB．when should I go
C．what I should doD．when I should go
I had a pleasant trip last week．
_________．（ ）
A．Oh，that's very kind of you
B．It's a pleasure
C．Congratulations
D．I'm glad to hear that
He didn't go to school late yesterday，did he？
_________，though it rained hard yesterday．（ ）
A．No，he didn'tB．Yes，he didn't
C．Yes，he didD．No，he did
The town of Huarong _________ a lot in the past five years．
That's true．It's becoming more and more beautiful．（ ）
A．changedB．has changed
C．had changedD．is changing
How old is your son？
_________．We had a special party for his _________ birthday yesterday．（ ）
A．Nine，nineB．Ninth，nine
C．Nine，the ninthD．Nine，ninth
The dishes in this restaurant must be very expensive．
Don't worry．You can enjoy yourself．It's my ．（ ）
A．timeB．taskC．treatD．taste