1.1.        If you expose phosphorus to air, It will burn

        1.2.        If you …heat..... ice, it..... will turn... to water.

        1.3.        If metal......gets.... hot, it …will expand...

        1.4.         If you ……stand…………...(stand) in the rain, You ……will get…………...(get) wet

        1.5.        If anyone …rings……………...(ring) the bell, don’t ………open………...(open) the door.

        1.6.        If my father ……doesn't sleep…………...(not, sleep) well, he ………will drink………...(drink) coffee before going to bed

        1.7.        If you………press………...(press) this button, the machine……will stop…………... (stop)

        1.8.        If you ……multiply…………... (multiply) 6 to 8, you ……will get…………... (get) 48

        1.9.        If anyone ……calls…………...(call), say that I ……am not…………...(be, not) at home.

    1.10.        If you ………go………...(go) to the Post Office, you ……will mail…………...(mail) this letter for me.