Supply the correct forms of the verbs. Use these modals in the main clause

Supply the correct forms of the verbs. Use these modals in the main clause: can, could, may, might, should, ought to, or must. Alternatives are possible:
1.If you ........ to see clearly, you ........... your glasses. ( want / wear )
2.If you .......... the lesson, I ........... you withyour homework. ( not understand / help )
4.If Jane ........... still ill tomorrow, she ......... at home. ( be / stay)
5.Mark ................. early if he ................. to get to Montevideo on time. (leave / want )
6.If he .......... coming tonight, he .......... next week. ( not be / come )
7.If the wind ............ strongennough, we ...........sailing, but I'm not sure. ( be / go )
8.You ......... your baby to the doctor's if his temperature .............. up again. ( take / go )
9.If you ......... work early, you ............... for a drink with us. ( finish / come )