VIII. Use the present continuous or the present perfect to complete the sentences.
1. I (not/do) the housework yet.
2. She (eat) chocolate all morning, so she feels sick.
3. We (know) James for ages.
4. I (call) John for houes and hours and he hasn't answered.
5. Be quick! She (wait) for you since ten o'clock.
6. (you/buy) your train ticket yet?
7. Julie (learn) to drive for six years!
8. Simon already(write) three books.
9. I (do) everything I needed to do today! Hurray!
10. I (work) in the garden all day and I need a rest.

X. Complete the sentences with the correct form of the verb in brackets.
1. If you (heat) ice, it (melts).
2. If you(not/exercise) and eat healthily, you (put) on weight.
3. If we(go) to the cinema, we (buy) some popcorn.
4. If you (read) more books, you (learn) more things about this event.
5. You(catch) a cold if you (not/dress) warmly.
6. When it (snow), it (be) cold outside.
7. If you (not study), you (fail) the test.
8. I (lend) you my umbrella if you (need) it.
9. If I (be late), I (call) you.
10. If you (mix) yellow and blue, you (get) green.