1. Open the brackets and use the correct form of the verb. 1.He can’t come at noon tomorrow because he (give) a lesson at that time
2.Water ( boil) at 100 degree C.
3.Advertising( play) great part in our business?
4. I was at home yesterday evening. From 7 to 9 I (to watch) a comedy on TV.
5.He (to turn off) the electricity when I (to listen to) the radio.
6.Hurry up! The bus ( to come). I ( not/to want) to miss it.
7.Newton (invent) the telescope in 1668?
8.We (write) an essay by 2 o’clock tomorrow .
9.You (have) any plans for lunch today? — I (meet) Shannon at the Sham Cafe in an hour.
10.I ( not to believe) you at the moment. Maybe ( believe) you later.
11.While the guests (to drink)tea the girl (to play)the piano.
12.I want to see how much the place (change) since I was there last.
13.When I ( arrive) at the cinema, the film (already/start).
14.He ( be) healthy until he (start) overeating.
15. The train ( leave) before we get to the station.