there(was /were)(a lot of much) potatoes in the box last month. 2.how(many /much) jam (was /were) there on the table ten minutes ago? 3. There (wasn't /weren't) (many /much) books on the shelf.

There was a lot of potatoes in the box last month.How many jams were there on the table ten minutes ago?There weren't many books on the shelf.