6. Bill and Sue at the florist's or at the bookshop? – They ______ at the florist's.

Explanation:

This task requires filling in the blanks with the correct past tense form of the verb 'to be'. 'Bill and Sue' is a plural subject, so we use 'were' for the implied question and 'were' for the answer.

Answers:

1. Bill and Sue were at the florist's or at the bookshop? – They were at the florist's.