八下英语的关于 if 条件句的 用所给单词的适当形式填空（if条件句要用一般现在时,主句用一般将来时）
①If he __ (have) enough time tomorrow ,he __ (meet) you at his office.
②If you __ (help) others in trouble ,you __ (be) happy.
③If I __ (not finish) my homework ,my teacher __ (be) mad at me.
④If it __ (rain) tomorrow ,we __ (have) our P.E.class indoors.
⑤When Ann called me ,the barber __ (cut) my hair.
⑥They __ (build) more roads in our city next year.