your birthday si coming.that's next wednesday!that能不能改成it?

that's next wednesday.为什么用that?用其他的可以吗 "Beep,beep!"Your uncle is coming.That's his c__ it's( )birthday next week It's quite clear that she is not coming. l am glad to hear that your father‘birthday is coming.Last t That si a map改成一般疑问句 It's regard to our meeting on next Wednesday. It`s expected that new highway ----completed by next July. it's expected that the new highway____completed by next july It's important that he____the final examination next week.A. It's said that they ____to America next month. 请将下列陈述句改成一般疑问句. . that‘s your watch. that’s his shirt.