to improving services, we will provide customers with all the information they need.

We had ________ really cold February thisyear.－Ican’t remember ________ spring when it snowed in Changzhou .

He always tells me funny things and _________.

In order to be a strong and effective partner with the Asia Pacific region, American president Obama thinks it absolutely to have a strong relationship with China．

I can’t thank you ________ much because without your help I ________ have won the first prize