Write the sentences in the Present Simple, Present Continuous, Present Perfect or Present Perfect Continuous:

12 I ……. (never / wear) a tie to work.

13 I …….. (drive)! You can sit in the back with Martin.

14 Stop doing that! You …. (be) very silly today, Paul!

15 We ….. (not / be) to an Indian restaurant for ages!

16 We …….. (walk) the whole day. Let’s have a rest.

17 I ….. (not decide) about buying a new bike.

18 The dog ……….. (dig) all the morning but it hasn’t found any bones yet.
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