1. they (watch) television - their favourite programme is on at the moment. 2. i'll call you as soon as we (sign) the contract. 3. they went on holidays with a friend of (their, theirs). 4. he didn't even apologize (for, at) being late. 5. this house (build) by my grandfather many years ago. 6. are you going (somewhere, anywhere) today? 7. be careful, you've made (a, the, -) mistake. 8. we (travel) for about two hours when i realized that something was wrong with one of the tires. 9. mary will be ready soon. she (have) a bath at the moment. 10. they (send) you the money before they (leave).you (receive) it soon. 11. she is (a, the, -) friend of mine. in fact, she is (a, the, -) best friend i have ever had. 12. he'll wait (at, for, to) you in front of the library. 13. i saw him (a few, a little, a lot) weeks ago. 14. she is a really nice person - one of (nice) people i know. 15. i'll tell him the truth of course. but it (not, be) any good. he (not, believe) me. 16. i thought that my train (leave) in an hour and was very disappointed when i (arrive) and (learn) that it just (leave). 17. he kept looking at her, wondering where he (see) her before. 18. the sooner we (start), the sooner we (get) there. 19. when it (get) dark, we'll have to stop. we (may, can't, aren't) work in the dark. 20. tell me (what, which) you want (me, i) to do.