Cho em hỏi là Hg3(PO4)2 và Pb3(PO4)2 kết tủa có màu gì vậy ạ?

 We have a period that lasts forty-five minutes.

→ We have a _____________________________________________       

This TV show lasts thirty minutes. → We watch a _______________________.

 We often join in Music club after school. → We often ______________________.

We have a period that lasts forty-five minutes.

→ We have a ________________________________________________

It’s a good thing to do community service.

→ You should _________________________________________________

The weather is wet. → What ______________________________________!

Don’t ask Margaret for advice. She ______ know what to do.

A. will B. won’t C. shall D. shan’t