Answer:
Part A:
1. Do you have _this_ jacket in extra large?
2. Do you have _these_ shoes in size 8.
3. We _these_ sweaters in small.
4. We have _this_ dress in size 10.
5. We have _this_ shirt in medium.
Part B:
1. Do you have _those_ socks in a small?
2. Do you have _that_ skirt in large?
3. We have _those_ pants in size 16.
4. We have _those_ T-shirts in extra large.
5. We have _that_ shirt in size 6.
Step-by-step explanation:
When referring to one object you use this or that.
When referring to two or more objects you use these or those.