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Choose the correct form of the verb.
1) My sister is fond of ...tests.
a) writing b) written

2) Our grandparents enjoy... letters.
a) written b) writing

3) Pam's pets like ...food from the pet shop.
a) eating b) are eating

4) These films ...everybody.
a) amuse b) amusing

5) Those who...things have big collections.
a) collect b) are collecting

6) My parents ...the apples in the gardens.
a) are collecting b) collects