Complete the first conditional sentences with the correct form of the verb in brackets.
1) If Sam (does not phone) soon, Ella will be worried.
2) If we go by plane, it (will be) quicker.
3) We (shall miss) the film if we don't catch the bus.
4) If he doesn't pass his English exam, he ( will not go) to college.
5) If you (take) Helen's dictionary, she'll be angry.
6) I won't go to the party if I (am not be) invited.