Supply the correct from of the verbs in parentheses, using Present Simple or Future perfect.

        1.  The boys (play)………………in the garden when we (visit)……………their parents this afternoon.
 
        2.  I (come)……..and (see)………..my grandfather before I (leave)…………..Bangkok for The United Kingdom in the evening.

        3.  She (go)……………back to the country when I (write)……………to her.

        4.  Jack (return) …………………this book to the library before the seventh day (come)…………….

        5.  Before he (call)……………..up me, I (leave) …………………..by tomorrow.

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        1. will be working, see
        2. arrives, will be having
        3. call, will be leaving
        4. is going to, ends
        5. see, will be cooking
        6. will have played, visit
        7. will have come and seen, comes
        8. will have gone, write
        9. will have returned, comes
        10. calls, will have left