why do people want to celebrate their birthay??

Do you like doing exsrcises?Why??

1. I'm sure he (not get ) ................... the letter yet

2. I wish I (not feel)............ sick last night

3.The .......... throughout the world has been easier thanks to the internet ( communicate)

I want to learn that school, but it .......... much money

A. loses B. costs C. spends

Nhận biết các chất sau bằng phương pháp hóa học: Ba(OH)₂ , Cu(OH)₂ , Na₂SO₄ , HCl

Help meeeee!!!