The dishes in this restaurant must be very expensive．

Don't worry．You can enjoy yourself．It's my ．（　　）

A．timeB．taskC．treatD．taste

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 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

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

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