if he reads instructions, - he will not make a mistake., I f you have a problem, - call me., Should he come tomorrow, - he will benfit., If he is clever, - he will find the quiz easy., Don't make noise - if your father is nervous.,

first conditional

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?