I WRITE/ CONNECTION/ PAIR OF SHOES/ PURCHASE/ LAST MONTH//A. I’M W...

51. I write/ connection/ pair of shoes/ purchase/ last month//

a. I’m writing to you in connection with a pair of shoes that I purchased last month.

b. I write to you in connection to a pair of shoes which I purchased last month.

c. I’m writing to you connection with a pair of shoes that I purchased last month.

d. I write to you in connection with a pair of shoes that I’ve purchased last month.